Southwire’s new line of non-contact ac voltage detectors make it even easier to check for the presence of live voltage on outlets, wiring, circuit breakers, lighting fixtures and switches. all come with a standard on/off switch and rear facing flashlight which is now twice as bright. Audible and visual indication of AC voltage without contact New more powerful rear facing flashlight Standard on/off switch Bright green LED indicates unit is on and ready for use Flashing red LED and pulsing beeper indicate presence of AC voltage