VC1017 Smart Voltage Detector Tester Pen Meter Digital AC 12-1000V NCV Automatic Voltmeter Sensor Tester Buzzer test Tool A NENG VC1017 Smart Voltage Detector Tester Pen Meter Digital AC 12-1000V NCV Automatic Voltmeter Sensor Tester Buzzer test Tools A.Instruction: 1.)power on/off instrument 2.)turn torch on/off 3.)AC Voltage detection 4.)sensitivity adjustment 5.)auto power off 6.)low battery indication B.Specification: AC Voltage detection range about 12 to 1000V(50/60Hz) Detected frequency 50/60Hz Alarm mode alert user with led and buzzer sound torch white color light zero line and live according to detected single strength line determination to determine it is zero or live wires NCV sensitivity adjust the sensitivity by sensitivity adjustment key NCV signal temperature range turn on different led to show out the NCV detecled signal strength(weak/middle Istronge) Operation temperature range 0~40 Altitude less than 2000 meter Power supply 2*1.5V AAAsize battery product dimension 174*34*23mm product weight 60 gram C.Package Include: 1*VC1017 tester 1*outer packing box(according to the choice) 1*English manual