â·ÃÊͺ¶ÒÁÃÒ¤Ò The Extech DVA30 is the only two-in-one current/voltage detector designed for electrical testing. DVA30: Non-contact AC Voltage and Current Detector Detects and pinpoints wide range Voltage and Current with Sensitivity adjust Features: The only two-in-one current/voltage detector designed for electrical testing Non-Contact AC Voltage detection from 12V to 600VAC Non-Contact AC Current detection from 200mA to 1000A Sensitivity adjustments to increase or reduce sensor trigger threshold Current sensor detects current flow through shielded wires, conduit, and metal circuit breaker/junction boxes AC Current Detector DVA30 Extech Multimeter non contact Voltage Detector