ITEM NAME:Non-contact Test Pencil 1AC-D Ultra-Safe Induction Electric Pen VD02 Detector FT Features: Electric Socket Wall AC Power Outlet Voltage Detector Sensor Tester Pen 90-1000V Long life and low power consumption Compact, safety, & easy to carry The next generation AC non-contact voltage testers are easy to use -- just touch the tip to a terminal strip, outlet, or supply cord. When the tip glows red and the unit beeps, you know there is voltage present. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home. Frequency Range: 50 to 500 Hz Test Voltage Range: 90-1000V AC Safety Rating : Â CAT II 1000v.Compact, safety, & easy to carry. Frequency Range: 50 to 500 Hz. Item size: 163mm.