Non-Contact Voltage Tester: The NCV sensor automatically recognizes the voltage. You just place the NCV inductive probe near the cables, cords, or outlet. Triple Volt Alert upon voltage detection: the NCV sensor changes to red and the buzzer sounds, the LCD screen display up to 8 bar graphs. In addition, the screen will light up red or green to distinguish between live/ neutral wire.
Adjustable Sensitivity with Dual Range: This voltage tester pen detects 12-1000V AC and 48-1000V AC. Press the “S” button to adjust sensitivity and adapt the low range for doorbells, thermostats, irrigation wiring, etc.
GFCI Function: This Electric tester tests GFCI devices by simulating ground fault conditions, It tests standard outlets (multiple outlets in the kitchen or bath, and outdoor receptacles require GFCI protection). Be careful using this function on normal receptacles. It may cause a house wiring trip.