The RT250 is an electrical receptacle tester that tests the wiring conditions at an electrical outlet and inspects GFCI devices. The LCD displays the voltage, identifies the wiring fault, and the time required to trip a GFCI device. It is designated for use with North American 3-wire 120V electrical outlets.GFCI Receptacle Tester features a large backlit LCD readout of voltage and clear indication of wiring conditionsLCD readout shows the time required to trip a GFCI deviceDetect and identify common wiring faultsPatent pending detection of Open Neutral Open Ground wiring faultAuto-Hold is convenient for hard-to-reach outletsBright green and red LEDs illuminate for visual indicatorsCAT II 135V safety ratingDurable 6.6-Foot (2 m) drop protectionFor use on 3-wire, North American 120V electrical outlets only
