Safety Digital Electrical Socket Wall Power Outlet Measure Voltage Instrument Features: Electric Socket Wall AC Power Outlet Voltage Detector Sensor Tester Pen 90-1000V 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. A perfect tool kit for home and electric industry uses Ideal design for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc Just pre the button, white LED light can be always on when there is absence of voltage "Beep" sound and red flashing LED would indicate the presence of voltage Totally insulated, no exposed metal or conductive parts Long life and low power consumption Compact, safety, &easy to carry Specifications: Frequency Range:50 to 500 Hz Test Voltage Range: 90-1000V AC Powered By: 2 x AAA Batteries (Not included) Item size: about 152*23*15mm/ 6.00in*0.89in*0.68in Package size: 204*91*19mm Net weight: 26g (Not included) Safety Rating : CAT II 1000v Material: ABS Plastic Color: Yellow &black / gules &black Packing content: 1x LED Light Voltage Alert Pen