1. before inserting the power supply, the switch should be positioned in the closed state, and the power supply voltage is suitable for the machine to be used. When the electric screwdriver is not used or the power is broken, the plug should be put off.
2. when using, do not set the torque adjustment too large.
3. when changing the screwdriver's head, it is necessary to switch the power plug off the power socket and turn off the power supply of the screwdriver.
4. do not throw or hit this electric screwdriver during use.