... Non-Contact Voltage Detector Pen AC Volt Sensor Tester Alert 90~1000V LED, YFT397A Trade Manager: cnyaixun DescriptionThe voltage detector is designed for electrical testingNon-contact detection, safe ... conductive partsIdeal for testing AC cables, circuit breakers, wall sockets, junction boxes, fuses, etcSmall and compact pen design for easy carryingTest Voltage Range: 90-1000V ACFrequency Range ...