... Beep and flashing LED indicate non-contact voltage detection Measurement category Bandwidth: 50/60Hz Voltage Tester VD02Voltage Sensitivity: 90-1000VAC Bandwidth: ... Beep and flashing LED indicate the presence of voltage Use to detect voltage in outlets,lighting fixtures,circuit breakers,wires,and ... to find a break in a wire.Safe,non-contact voltage detectionLED LIGHTPower: (Size AAA)1.5V x 2 BatterySize ...