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The Eisenwarenmesse 2026, one of Europe’s leading trade fairs for hardware and building materials, will open its doors in Cologne from March 10 to 13, 2026. This highly anticipated event brings together global industry leaders, innovators, and professionals in a dynamic showcase of cutting-edge hardware solutions. Cologne, Germany’s cultural and economic hub, once again proves its role as a central stage for industrial advancement. With over 1,200 exhibitors from more than 50 countries, the fair will highlight breakthroughs in door fittings, locks, hinges, fasteners, and smart hardware systems. Visitors can explore sustainable materials, automated locking technologies, and eco-friendly production methods shaping the future of construction and security. A major focus of Eisenwarenmesse 2026 is innovation in smart home integration. Exhibitors will present hardware that connects seamlessly with digital ecosystems, offering enhanced convenience, safety, and energy efficiency. From app-controlled locks to biometric access systems, the fair will demonstrate how traditional hardware evolves into intelligent components of modern living. Educational seminars, live demonstrations, and networking events will enrich the experience. Industry experts will discuss trends like circular economy practices, digitalization in manufacturing, and regulatory changes affecting product standards. For architects, builders, retailers, and designers, Eisenwarenmesse 2026 offers unmatched access to new products, partnerships, and market insights. Attendees will leave inspired by bold ideas and practical solutions driving the hardware sector forward. Mark your calendars: March 10–13, 2026, at Messe Köln. Whether you're sourcing the latest innovations or exploring future trends, this is the must-attend event for anyone involved in hardware and building technology. Don’t miss the ultimate showcase of creativity, quality, and progress—Eisenwarenmesse 2026, where the future of hardware is unveiled in Cologne.

The first article of this 3-part blog post series was dealing with the near-term history of European directives and regulations related to energy efficiency and different energy-related products (ErP), not only energy-using products (EuP). Starting from Kioto 2005, this process has then proceeded to the situation, where new kinds of regulations have been taken into use, concerning many energy-related products, the latest of those being light sources. Since 1st September 2021, the insertion of light sources into the EPREL (European Product Registry for Energy Labelling) database has been possible officially. Some problems have occurred in the technical insertion process and also in decisions over which component is a light source and which component is not. The term ’light source’ is defined in the European Commission Regulation EU 2019/2020 laying down ecodesign requirements for light sources and separate control gears (Single Lighting Regulation, SLR). In this blog post, you can learn how light sources are categorized and what this categorization means in each case.CATEGORIZING THE LIGHT SOURCES – IS THE LIGHT SOURCE REMOVABLE OR NOT?I shortly presented the terms of ’containing product’, ’light source’, and ’separate control gear’ in my earlier blog post in this series. SLR requires that the light source and separate control gear are removable so that the luminaire/fixture can be called the containing product. If not removable, the whole fixture itself has to be regarded as a light source. Here starts the categorization. I concentrate on light sources in this post. The easiest case is a containing product without a light source: Not Applicable (it is just an empty luminaire body that has no light source included). The second easiest case is the LED lamp that you can buy from a retail store. Then it is not containing a product but only a light source. The sales package in store should include an energy label and other information defined in SLR regulation. Additionally, the lamp information should be added to the EPREL database. Then let’s proceed into the case(s) where containing product includes the light source. The first question is that is the light source itself removable? If it is, then it has to fulfill light source requirements defined in Ecodesign/SLR regulation. It is enough that the light source is removable from the containing product without breaking the light source. The containing product is allowed to still deteriorate in that case, but not the light source. Then there is the next case. If the light source is NOT removable without breaking it, then the whole lighting fixture is considered a light source. The sales package of the containing product has to include an energy label and also other information defined in SLR regulation. So, the key point is the question, is the light source removable or not? The question, is the light source replaceable or not, is not relevant otherwise than for the end-user that is you or me, a consumer. The supplier (or manufacturer) has to inform in their technical representation, why the light source is not replaceable. This technical documentation should also include information that “this containing product includes a light source the energy efficiency class of which is X”. X can vary from A to G in the new energy efficiency classification. Light source information together with the energy efficiency class must be found in the EPREL database.REQUIREMENTS DEFINED IN SLR/ECODESIGN REGULATIONThere are several requirements defined in SLR/Ecodesign regulation. These are:Energy efficiency requirementsFunctional requirementsInformation requirements (markings)ENERGY EFFICIENCY REQUIREMENTSFirst of all, energy efficiency requirements demand that power consumption of a light source can’t exceed Pon,max (W), which is defined for different light sources in the 2019/2020 SLR regulation. Pon,max depends on many parameters, some of them are real and measurable values and part of them are computational values or factors/multipliers. Computational values are based somewhat ”loosely” on the real world. If you measure for example your LED board/module in the integrating sphere, and the light source is defined as a non-directional light source (NDLS), you can use all lumens that you measure in your sphere as useful luminous flux (term defined in SLR regulation). If you have a directional light source (DLS), the regulation defines which portion of light you can use for this directional light source. Usually, the measurement for the DLS light sources is better to carry out with a goniometer that can measure light intensity at different angles unlike with integrating sphere which collects all the light rays and integrates them for the spectrometer through an optical fiber. This relates essentially to EPREL energy class information because you define the energy class according to the following equation: hTM = (Fuse/Pon) x FTM where hTM is total mains efficacy, Fuse and Pon are LED parameters (useful luminous flux and power consumption of the measured LED board, COB LED, or any other light source) that are measured from the light source and FTM is a multiplier that is 1.00 for mains light source (MLS, e.g. AC LED) and 0.926 for the non-mains light source (NMLS, e.g. LED board that needs a separate control gear for operation). The updated measurement software can calculate hTM value directly when you first choose in the software, is your light source NDLS or DLS, and is it NMLS or MLS light source. So spectrometer first measures luminous flux and power consumption and calculates LED luminous efficacy, and then by using a correct multiplier for your light source, calculates total mains efficacy that defines the energy class. For example, in the case of an LED board with separate control gear, this multiplier is 0.926 (see the previous paragraph). Then you can add your LED light source to the EPREL database by filling in all public information, and the EPREL database creates the final energy label for your light source. For market surveillance, you have to add also other technical information, that is not publicly available for everyone.FUNCTIONAL REQUIREMENTSThen there are functional requirements. They include many parameters that also depend on the used control gear (LED driver in our case).CRI index ≥80 (outdoor and industrial applications are the exceptions)Power factor cosf (certain limits, depending on the control gear used)Lumen maintenance factor (LED and OLED light sources) àbased on L70B50 value in hoursSurvival factor (LED and OLED light sources) àrelated to the lumen maintenance factorColor consistency (LED and OLED) àhas to be MacAdam 6-step or lowerFlicker PstLM (LED and OLED), depends on the control gear à PstLM≤1.0Stroboscopic effect (LED and OLED), depending on the control gear à SVM value≤0.4Two last values are defined at full load condition.INFORMATION REQUIREMENTS (MARKINGS)Finally, there are information (marking) requirements.The surface of the light source itself (not package marking):Useful luminous flux (lm)CCT/Correlated color temperature (K)For directional light sources (DLS), also radiation angle (°)Depending on the size of the light source, the priority is 1) Luminous flux, 2) CCT and 3) radiation angle.Packing information:For all light sources, which are sold separately in an independent packaging (but not in a containing product) through a point-of-sale, there are several requirements regarding the packing information. Some of these are mentioned below. It is to be noted that the three first ones shall also be marked on the surface of the light source, given that there is space for all three.Useful luminous flux (lm)CCT/Correlated color temperature (K)For directional light sources (DLS), radiation angle (°)Electrical interface detailsL70B50 lifetime (hours)On-mode power (Pon)Standby power (Psb)Networked standby power (Pnet)CRI/Colour rendering indexIndication if CRI<80 (note; the application must allow it)Indication if the light source is designed for non-standard conditionsWarning sign, if dimming is not allowed or can be realized only with specific dimmersWarning sign, if the light source contains mercuryAs an alternative to text, the information can also be given in the form of graphs, drawings, or symbols. Besides this information, the packing must show the energy label.If a light source is being sold as a part of containing the product (and the light source is removable), the requirements are different. In this case, there can’t be any energy label on the containing product packaging. The packaging must indicate the following:Information on whether the light source is replaceable or not, must be shown on the packaging (in the case of end-user sales) or on a free-access websiteInformation if the light source can be replaced only by a professionalAs an alternative to text, the information can also be given in the form of graphs, drawings, or symbols.CONCLUSIONIn the third, and the last, article of this blog post series, we concentrate on the effects that these regulations may set for the whole lighting industry. As you can see, many parameters depend also on the driver/control gear that is used with the light source. How this affects the component (light source and/or control gear) selections to make genuinely Eco-designed containing products, this we will discuss in the last part of this series.

The electric hand drill is a convenient and easy-to-carry small drilling tool, and consists of a small motor, a control switch, a drill chuck, and a drill bit. In order to make good use of this thing, it is not necessary to understand its operating standards, but also to understand its use, pay attention to matters, and negligent operations constitute a loss. 1. The shell of the electric drill is grounded or connected to the neutral wire for maintenance. 2. The wire of the electric drill should be well maintained to prevent the wire from being damaged or cut indiscriminately. It is not allowed to drag the wire into oil or water, which will corrode the wire. 3. Wear rubber gloves and rubber shoes when using it; when working in a humid local area, stand on rubber pads or monotonous wooden boards to prevent electric shock. 4. When electric drill leakage, tremor, high heat or abnormal noise are found during operation, you should continue to work and find an electrician to check and repair. 5. When the electric drill does not roll continuously, the drill bit cannot be unloaded or changed. The power supply should be blocked when resting or leaving the work place. 6. Can not be used to drill concrete and brick walls. Otherwise, it is very simple to cause the motor to be overloaded and burn the motor. The key lies in the lack of impact organization in the motor and low bearing capacity.

1. Selection criteria. Regarding different drilling diameters, the appropriate electric drill standards should be selected as much as possible. 2. Pay attention that the voltage should match. When connecting with the power supply, pay attention to whether the power supply voltage matches the rated voltage of the electric drill. 3. Check the edge resistance. For electric drills or new electric drills that are not necessary for a long time, use a 500V insulation resistance meter to measure the insulation resistance between the winding and the casing before use. The resistance must not be less than 0.5Mf, otherwise it should be monotonically processed. 4. Drilling. The drill bit used is sharp, do not use too much force when drilling, and the electric drill is overloaded. When the speed drops suddenly. Assuming that when the drill suddenly stops, the power supply should be blocked. 5. There should be protective insulation. Check whether the grounding wire is excellent before use. 6. Idling test. It should be idled for 1min before use to check whether the electric drill is working normally. During the trial rotation of the three-phase electric drill, you should also check whether the rotation direction of the drill shaft is normal. If the rotation is not correct, you can arbitrarily swap two three-phase electric wires of the electric drill to change the rotation direction. 7. Refined orientation. When moving the electric drill, hold the handle of the electric drill. Do not delay the power cord to move the electric drill, and the power cord will be scratched or broken. 8. The electric drill should be handled gently after use. Damage the shell or other parts by being impacted.

Electric drills can be divided into three categories: electric hand drills, percussion drills, and hammer drills (electric hammers). 1. Hand drill: It has low power and can be used for drilling wood and as an electric screwdriver. It does not have much value, so purchase is not recommended. 2. Percussion drill: It can drill wood, iron and bricks, but cannot drill concrete. Some percussion drills indicate that concrete can be drilled. It is not feasible, but there is no way to drill tiles and concrete with a thin outer layer of bricks. questionable. 3. Hammer drill (electric hammer): It can be used to drill holes in the data. The functions have also increased accordingly. For details on how to choose, contact the respective scope of application and requirements.  

Taking indoor ceilings as an example, it would take a lot of effort to drill holes with percussion drills. I used it to drill holes on the ceiling to install lights. As a result, if the lights were not installed, several drill bits were dropped; but I used them to hit the wall. This kind of situation will not occur, so the percussion drill is suitable for ordinary use in the family, but for the drilling staff, the hammer drill should be used. When hitting a wall, the hammer drill will be better than the percussion drill. The key is that the structure and working principle of the two are different. I will not cite jargon and terminology to explain it. TX is not interested in this, so I just use it straightforwardly. To express in the words, the impact drill requires continuous application of force to make it rotate during the use of the hammer drill, and when using the hammer drill, it is necessary to apply a little force at the beginning to make the drill move forward actively.

1. Selection of electric drill bit size. The size of household electric drill bit is usually 20mm. However, the details depend on your own situation. 2. Selection of additional functions of electric drill: the same type, there will be some additional functions, for example, the type with R indicates that the drill can rotate forward, and its advantage is that when the forward rotation is not possible, it can be converted to rotation; there is E in the type It shows that the electric drill can be adjusted in speed. When the high speed is not required, it can be adjusted to low speed. Of course, the more functions, the price will increase.

The impact hand drill is mainly based on rotary cutting, and has an electric tool with an impact mechanism that relies on the thrust of the operator to produce impact. It is suitable for drilling masonry, concrete and other materials. The following questions should be paid attention to in the accurate use and protection of impact hand drills. (1) Before operation, check whether the power supply is consistent with the customary additional 220V voltage on electric tools to reduce the wrong connection to the 380V power supply. (2) Before using the impact drill, please carefully check the body protection, auxiliary handle and ruler, and whether the machine has any loose screws. (3) The percussion electric drill is installed according to the data request into alloy steel percussion drill bits or general-purpose drill bits of the permitted size between φ6-25MM. It is forbidden to use drill bits that exceed the scale. (4) The wire of the impact drill should be well protected. It is forbidden to drag the wires all over the floor to reduce the damage and cut, and reduce the dragging of the wires into the oil and water, which will corrode the wires.

(1) The electrician regularly replaces the carbon brush of the impact drill and checks the tension spring pressure. (2) Protect the whole body of the impact drill and clean and dirt, so that the impact drill can rotate smoothly. (3) The personnel regularly check whether the parts of the electric drill are damaged, and replace the severe and unusable parts in time. (4) Timely replenish the screw fasteners of the body that were lost from the body during work. (5) Regularly check the bearings, gears and cooling fan blades of the transmission part, and add lubricating oil to the rotating parts to extend the service life of the electric drill. (6) After the use is completed, the electric drill should be returned to the tool storehouse for safekeeping. Reduce overnight storage in the personal stuff cabinet.  

The most common power tools are electric drills, electric grinders, electric wrenches and electric screwdrivers, electric hammers and impact drills, concrete vibrators, and electric planers. Electric drill The specifications are 4, 6, 8, 10, 13, 16, 19, 23, 25, 32, 49mm, etc. The numbers refer to the diameter of the drill bit drilled on steel with a tensile strength of 390N/mm. For non-ferrous metals, plastics and other materials, the drilling diameter can be 30-50% larger than the original specification, and it is equipped with a polishing machine. Electric wrench and electric screwdriver For loading and unloading threaded couplings. The transmission arrangement of the electric wrench is composed of a planetary gear and a ball spiral groove impact arrangement. The specifications are M8, M12, M16, M20, M24, M30, etc. The electric screwdriver chooses the clutch transmission arrangement or gear transmission arrangement, and the specifications are M1, M2, M3, M4, M6, etc. Electric hammer and impact drill Used for drilling, grooving and roughening concrete, brick walls and building components. In connection with the use of expansion bolts, it can advance the speed and quality of various pipelines, machine tools and equipment; the impact principle of the electric hammer is to generate impact power by the movement of the piston, and the impact principle of the impact drill is that the gear runs in to generate impact power, so the impact force of the electric hammer Big. Concrete vibrator It is used for tamping concrete when pouring concrete foundation and reinforced concrete components to reduce air holes and advance strength. Meanwhile, the high-frequency disturbance power of the electric direct-coupled vibrator is formed by the rotation of the motor, which is powered by a 150Hz or 200Hz intermediate frequency power supply. Electric planer It is used for planing wood or wooden structural parts. It can also be used as a small table planer when installed on a bench. The knife shaft of the electric planer is driven by the motor shaft through a belt. Grinders Commonly known as grinding head machine; electric grinder; electric grinder, an electric tool for sanding with a grinding wheel or disc.  

1. Pay attention to lubrication Please turn off the power switch of the machine before filling oil, and unplug the power plug from the socket of the power source. Large electric picks (such as Z1G-65) are equipped with a fuel tank, so even if you do not replenish oil, if the daily working time is 3~4 Hours, it can still be used continuously for about 20 days. Before using the electric pick, you should add oil according to the following method, or add oil in time when the hammer is weak. When the drilling rig is erected, if the oil cannot be seen through the sight window of the oil gauge (40# lubricating oil can be used), add oil in time. Before refueling, use the attached wrench to remove the oil gauge, and be careful to lose the rubber seal underneath. The oil level should be checked daily to confirm whether the oil level is. Small electric picks (such as Z1G-0810), the shape of which is the same as that of electric hammers, should be filled with 30 grams of lubricating oil instead of 30 grams. Adding more will cause serious failure of the whole machine; adding less will cause the whole machine to heat up and burn out the parts. Do not use car lubricating oil, bicycle chain oil or other lubricating oil casually. 2. Check the brushes. Motor brushes are consumables. Once worn out, the motor may malfunction. If a self-stop brush is used, the motor will automatically stop rotating. The brush should always be kept clean so that it can slide freely in the brush holder. 3. Maintenance of the motor The winding of the motor is the heart of the electric pick. It should be carefully checked for existence and whether it is wetted by oil or water. It can be seen from this that although the electric pick has so many performance advantages, if you can't pay attention to the precautions for use, its function will not be played, and it will not be conducive to the work process. Therefore, when using an electric pick, it should be carried out in accordance with the correct operating specifications.  

Don`t be too tight between the chain and the guide plate. When the electric chain saw is working, apply lubricating oil for 10 minutes to maintain the guide plate and the chain. At the same time, the variable box of the electric chain saw has to be yellow glycerin a year ago, and the carbon brush of the motor needs to be replaced frequently, about half a year. Things to keep in mind before operation: 1. Wear shoes when working. 2. It is not allowed to wear obese, open clothes and shorts, and no accessories such as ties, bracelets, anklets, etc. during work. 3. Carefully check the degree of wear of the saw chain, guide plate, sprocket and other components and the tension of the saw chain, adjust and replace it. 4. Check the switch of the electric chain saw, whether the power connector is connected firmly, and whether the cable layer is worn out. 5. Check the working environment and reduce the stones, metal objects, branches and other discards. 6. Choose the evacuation channel before operation.

1. When the processed original strip is within 1.5m from the conveyor, operation is not allowed. 2. Before turning on the power, turn off the electric chain saw switch to reduce accidental initiation. 3. Initiate the electric chain saw idling for 1 min before making lumber to check whether the operation is normal. 4. When launching or operating, hands and feet should not approach the rotating parts, especially the upper and lower parts of the chain 5. Check when the fuse is blown or the relay is tripped. 6. No line load operation is allowed, and no high-capacity fuse is allowed to be connected. 7. Operate the electric chain saw with both hands. 8. Stand firm during operation, and do not stand under the original strip or log, or operate on the original strip or log that may be tumbling. 9. When the shortcomings of the saw, you should pay special attention to the auxiliary personnel. 10. During operation, lubricate and cool the sawn timber organization. 11. When the original blade is sawn off, pay attention to the intention of the wood, and lift the electric chain saw after sawing off. 12. Turn off the switch of the electric chain saw first when transferring, and do not run during the transfer.  

(1) Motor; it is a self-ventilated single-phase series motor. The stator and armature conductors are made of polyester enameled round copper wire, which has been specially treated. The wiring selects an exceptional structure, touch. The commutator is made of trapezoidal copper bar, with thermosetting plastic and mica sheet as the medium. Thermosetting engineering plastics are pressed between the electric shaft and the iron core. The casing and handle cover of the 6, 10, 13 mm electric drills are made of thermoplastic engineering plastics. The 19, 23 mm electric drills are equipped with plastic bushings in the aluminum shell to form a two-layer structure. . (2) Switch: The electric drill switch with hand-punched agile blocking and self-locking equipment is selected. (3) Capacitor: A capacitor is installed in the handle of the anti-disturbance electric drill, which can suppress the disturbance of things to electricity and TV. (4) Gearbox: The case shell is made of die-cast aluminum alloy made by the original factory, and the gear is a modified gear, and it is not easy to wear after high-frequency heat treatment. (5) Power cord and plug: Choose a three-core flexible cord with a three-wire plug. One end of the power cord is fitted with a sheath outside the casing to protect the cord, and the other end is connected to the plug holder and then pressed into the plastic (rubber) to make Into a non-detachable power plug. (6) Drill chucks: Choose three-jaw drill chucks (or threaded drill chucks) for 6, 10, 13 mm. When using three-jaw drill chucks, first reduce the inner hole of the drill chuck and the surface of the drill shaft. Prohibited objects. Then install the chuck drill on the shaft for use.

An electric tool is a hand-held or removable mechanized tool that is powered by a motor or an electromagnet and drives the working head through a transmission organization. Electric tools have the characteristics of being convenient, simple to operate, and versatile, which can greatly reduce labor intensity, improve work efficiency, and complete manual operation mechanization. Therefore, they are used in construction, home decoration, automobiles, machinery, electricity, bridges, gardening and other fields. , And many enter the family. The characteristics of electric tools are light structure, small size, light weight, low vibration, low noise, easy to control and operate, easy to use, stable and durable. It is more efficient than wind-driven, low cost and easy to control.

1. Distinguish between household use or use according to needs. Most electric tools are about personnel planning, and should be distinguished from general household use when purchasing. Generally, tools used in households differ from general household tools in terms of power. Tools used in general households have relatively small engineering and relatively small workloads, so the input power of tools does not need to be large. 2. The outer packaging of the tool should be clearly pictured and not damaged. The plastic box should be stable. The buckle used to open the plastic box should be strong and durable. 3. The appearance of the tool should be uniform in color, there should be no scratches or bumps on the surface of the plastic parts, the device misalignment between the shell parts is ≤0.5mm, the aluminum casting coating should be lubricated and beautiful, and the surface of the whole machine should be free of stains. When holding by hand, the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters. 4. Hold the tool with your hand, turn on the power, operate the switch again and again to start the tool again and again, and check whether the on-off function of the switch is reliable. Check together whether there are any abnormalities in the TV and fluorescent lamps on site. In order to admit whether the tool is equipped with a useful radio stirrer. Drilling tools that use electricity as power. It is a conventional product in power tools, and it is also a product in demand power tools. The annual production and sales of electric tools account for 35%. According to reports, in the next ten to fifteen years, world sales of electric tools will increase at an annual rate of 5%. Electric tools are a kind of "low-value consumables". In Europe and America, electric tools are not only used as a kind of thing, but also as a gift, turning into a gift for each other, so there is a large market development.

Hand-held electric tools used by electricians are used in harsh environments, which require constant movement, high vibration and high noise during use. The power cord is easily damaged by external forces such as delay, resistance, or mechanical kneading, and is damaged, resulting in personal electric shock. In order to reduce incidents, hand-held electric tools should be used accurately. 1. It must be carefully inspected before use, the appearance is not damaged, the switching action is not jammed, the power lead and the shell of the electric device. Use a 500V megohmmeter to measure the resistance between the winding and the housing and the resistance value shall not be less than 0.5 megohm. See the attached table for the resistance value. 2. The maintenance grounding wire of the hand-held electric tool in the metal shell. The power lead is a multi-core soft rubber sheathed cable, and both ends of the grounding maintenance wire should be connected firmly. 3. Hand-held electric things should be used by full-time personnel with knowledge. Relevant operating procedures should be strictly followed during operation. 4. Check the electrical maintenance equipment and mechanical maintenance equipment before use. Its use should be normal. Also note that some of its scrolling is not jam-free. 5. When using Class I hand-held electric things, the user should wear compliant supplies and set up qualified appliances. And adopt corresponding maintenance methods in accordance with the rules, such as equipment leakage maintainers in the power circuit. When using Class II hand-held electric tools in humid and narrow places, the leakage switch should be installed. The operating current of the electric switch is less than 1.5mA, and the action time is less than or equal to 0.1 second. And the leakage switch should be placed in the container and supervised by a dedicated person. 6. Operation hazards of using hand-held electric tools. The common methods of arm vibration caused by long-term hand-transmitted vibration work include: maintain and maintain things in accordance with the requirements of the manufacturer`s operating instructions; when you can rotate different things, use as much as possible to generate lower vibrations The method of operation; should reduce the occurrence of cold gas and liquid around the operator`s hand; if possible, in cold conditions, the operating handle of the tool should be heated; the shape of the handle in the contact area should be reduced. High pressure things; when you can choose, you should choose things that require small contact pressure (holding force and feed force); use vibration-absorbing gloves; wear gloves when operating to reduce hearing damage.  

Self-protection when using electric hammer drill 1. The author should wear glasses to protect his eyes, and wear a mask when working with his face up. 2. Earplugs are required when working for a long time to reduce the influence of noise. 3. After working for a long time, the drill bit is in a hot state, so be careful to burn your skin when replacing it. 4. When working, you should use the side handle and operate with both hands to sprain your arm with the reaction force when the rotor is blocked. 5. Standing on a ladder or working at a high place, you should do a good job of falling from a high place, and the ladder should be supported by people on the ground.

1. Acknowledge whether the power supply connected to the site matches the nameplate of the electric hammer, and whether a leakage protector is connected. 2. The drill bit and the holder should be adapted and properly installed. 3. When drilling walls, ceilings, and floors, you should first admit whether there are buried cables or pipes. 4. When working in high places, pay attention to the safety of objects and pedestrians below, and set up warning symbols. 5. Acknowledge whether the switch on the electric hammer drill is off. If the power switch is on, the power tool will roll unexpectedly when the plug is pierced into the power socket, which may cause personnel risks. 6. If the workplace is located far away from the power source and the cable needs to be extended, the capacity should be used and qualified extension cables should be installed. If the extension cable passes through the pedestrian walkway, it should be elevated or the cable should be damaged by crushing. When using a hammer drill, the operator is required to strictly follow the hammer drill's operating rules to operate, and at the same time, he must pay attention to some operating precautions, so that the operation can be accurate.  

1. Loading and unloading of rechargeable batteries for power tools Rechargeable battery removal: Hold the handle firmly, and then push the battery door latch to remove the battery. Rechargeable battery installation: confirm the positive and negative poles before inserting the battery. 2. Charging Insert the rechargeable battery into the charger correctly, and it can be fully charged in about 1 hour at 20°C. Note that the rechargeable battery has a temperature control switch inside, and the battery will be cut off and cannot be charged if it exceeds 45°C. It can be charged after cooling. 3. Before homework a. Drill bit loading and unloading. Install the drill bit: After inserting the bit, drill bit, etc. into the chuck of the switchless drill, hold the ring tightly and tighten the sleeve sleeve backwards (clockwise from below). During operation, if the sleeve becomes loose, please tighten the sleeve again. When tightening the sleeve, the tightening force will become stronger. Disassemble the drill: hold the ring firmly and loosen the sleeve to the left (viewed from the front, it is counterclockwise). b. Check the direction of rotation. When the selector handle is placed at the R position, the drill bit rotates clockwise (as seen from the back of the charging drill), when the selector handle is placed at L, the drill bit rotates counterclockwise (as seen from the back of the charging drill), "R" , "L" symbol is marked on the body of this machine. Note: When using the rotary knob to change the speed, please make sure that the power switch is turned off. Changing the speed while the motor is rotating will damage the gears.