Voltage: 110V Rated Power: 1500W (Note: Working power changes as the heating element size changes) Illumination: LED Light Heating time: Continues up to 6 minutes. (From normal temperature to protection switch-off temperature) Heating capacity reference: Heating 10 bolts from 25Cto 300C. Recommended Heating Temperature : 200-700C. Bolt Diameter: 10-22mm, 23-28mm, 29-36mm, 37-40mm Functions: Heating rusted bolt nut, by the purpose of fast and easy remove from machines, cars etc. Using the thermal expansion theory, when the nuts of the bolt is heat, it expands which makes it easy to be removed from rusted bolt. If you need to use this device to others applications, please contact local dealer for support, any inappropriate operation may cause damage to the device. Operation Steps: 1.Release the 2 fixing bolts contraclockwise 0.5cm out. 2.Select appropriate size of coil for your work and insert the two ends into the front holes. 3.Twist the bolts clockwise to fix the coil tightly. 4. Plug in and place the heating element in the center of the coil, then press & hold the red button, the light in front will illuminate in 2-3 seconds. 5. At the same time, the heating elements' temperature raises, when work is done, release the button, and put it in safe storage. Use Rules: 1. This device is built in the over heat protection, it will shut itself off to prevent damage from overheat, you can use it after the temperature drop to normal . 2. Please try not to use it over 5 minutes one time, although the device is built in the over heat protection, however, life spam of the device may be reduced. 3. During use, please place the coil in the center of bolt/heating object, try not to reach or close to large metal part where you dont need to heat), otherwise the working load increases and slow down heating speed of bolt. Please refer to Pic 4. 4. When the white coil insulation is breach, please replace with new insulation pipe, or replace the coil, if you have to use it, please not use it in the way of Pic 1, Pic 2. (Breach of insulation pipe may lead to short circuit of coil, thus may cause irreversible damage to the heater) 5. Do not block the vent holes during working, otherwise cooling ability decreases, and cause overheat to the device very soon. 6. Please don't put this device in fridge, near the air conditioner vent, this may cause condense water inside of the device and may damage the board. 7. Please dont bend the power cord sharply, no matter in using or storage. 8. Please dont open the device by yourself. Package includes: 1pc of Magnetic Heater 4pc of Coil 1pc of User Manual