Teledyne FLIR VP50-2™ Triple Alarm CAT IV Non-Contact Voltage (NCV) Detector and Flashlight features vibration, light, and beeper alarms. With a CAT IV rating (1kV) and a powerful LED flashlight, the NCV detector can check whether an AC circuit is live before beginning work, detect voltage on exposed conducting parts or through insulation, identify live wires, and trace live wires and map circuits. The NCV has a 90VAC to 1kVAC voltage range and a 45Hz to 65Hz frequency range. Teledyne FLIR VP50-2 Triple Alarm CAT IV Non-Contact Voltage (NCV) Detector and Flashlight is designed to perform field troubleshooting and verification of electrical installations within residential, commercial, and industrial buildings.