SAFE VOLTAGE PEN – When testing AC voltage, it can automatically detect the live or null wire.
MEASURING RANGE - Voltage Tester Pen has the dual testing range, you can adjust the sensitivity according to your needs.
BUZZER ALARM & INDICATOR LIGHT- Upon detection, indicator light strobes and beeper sounds rapidly.(during switch to “H” or “L”).
LIGHTWEIGHT & PORTABLE – Included 2 batteries, always ready to use. With small size, it is easy to store in tool box and carry.
NOTE – When testing the voltage below 36V DC, please touch the copper piece with your finger.