High Torque Electrical Current Detection Screwdriver (Flat Head)

1.5v 250v 500hz 600v

battery polarity discrimination battery positive pole bright color lights button batteries Size CRV alloy steel Current Detection Screwdriver dual-use electrical pen electrical circuits hold Electrical Current Detection Electrician grade dual-use electricity test pen fire line identification grade dual-use electrical High Torque Electrical Line break detection Multi-function electricity test security power measurement steel Measurement range strong torque measurement Torque Electrical Current