Extech DV30  

DV30: Non-Contact Adjustable AC Voltage Detector

Non-contact detection of AC Voltage with Sensitivity adjust

The DV30 is an NCV Detector with a sensitivity adjustment to pinpoint the Voltage source. AC Voltage detection from 12 Volt to 600 VAC; CAT III-600 Volt safety rating. Complete with four LR44 button batteries and pocket clip.