Generic 1. Remove the multimeter back cover, insert 1pc 9V battery(Battery not included). 2. The iron heats up fast, so please select a suitable temperature. Working for long hours and high temperature may shorten its life. 3.Do not allow the iron to idle at operating temperatures for extended periods, This could burn the soldering iron and even other things. 4. Have a rest after every 10 minutes, it is good for your eye as well as the soldering iron. Solder and Soldering Iron