Detects voltage in outlets light fixings circuit breakers wires and cables or finds breaks in wires led and audible alarms voltage detection 70 1000v ac frequency 5060hz measurement category cat iii 1000v per ul3111 1 cat iv 600v per iec61010 1 overall length 150mm requires 2 x aaa batteries key features for quick accurate detection of live voltages cable breaks visual audible alarms voltage detection 70 1000vac frequency 5060hz requires 2 x aaa batteries