Non-Contact Voltage Detector MS8907 The Non-Contact Voltage Tester uses non-contact voltage detection technology for the detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires. The tester provides accurate test readings for use at the job site, in the shop and at home. This tester features high-quality electronics and heavy-duty polycarbonate plastic resins for a state-of-the-art construction that is comprehensive, reliable and durable. Operation voltage: 50 ~ 1,000V Non-contact voltage technology for the detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires Accurate test readings for use at the job site, in the shop and at home High-intensity, bright green LED shows when the tester is operational and helps illuminate the workspace