Klein Tools GFCI Receptacle Tester w/LCD Orange/Black. The LCD displays the voltage identifies the wiring fault and the time required to trip a GFCI device. Specifications for Klein Tools GFCI Receptacle Tester w/LCD: Manufacturer: Klein Tools Color: Orange/Black Features of Klein Tools GFCI Receptacle Tester w/LCD GFCI Receptacle Tester features a large backlit LCD readout of voltage and clear indication of wiring conditions. LCD readout shows the time required to trip a GFCI device. Detect and identify common wiring faults. Patent pending detection of Open Neutral Open Ground wiring fault. Auto-Hold is convenient for hard-to-reach outlets. Bright green and red LEDs illuminate for visual indicators. CAT II 135V safety rating. Durable 6.6-Foot (2 m) drop protection. Package Contents: Klein Tools GFCI Receptacle Tester w/LCD 2 x 1.5V AAA Alkaline and Manual Klein Tools RT250: GFCI Receptacle Tester w/LCD Orange/Black