Electric socket wall ac power outlet voltage detector sensor tester pen 90-1000vthe next generation voltage alert 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: Cat ii 1000v powered by: 2 x aaa batteries (not included) 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 press 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 the sensor uses a non-modulated laser receiver, please use indoors where no light, sunlight or other fixtures may interfere, recommended for use in dark environments. Notes: *The higher the voltage detected, or the closer to the voltage source the Pen is, the more frequently the red light flashes *We suggest you do a function test before each use of the detector by using it on a known circuit to ensure the tester is functional.. *A faint LED glow or Beep sound indicates batteries are low and need to be replaced.
