Klein Tools RT110 receptacle tester detects the most common wiring problems in standard receptacles. Conditions indicated - wiring correct, open ground, reverse electrical outlet, open hot, open neutral, hot/ground reversed. Conditions not indicated - quality of ground, multiple hot wires, combinations of defects, reversal of grounded and grounding conductors.
Additional Info: Operating Temperature: 32 to 140 deg F (0 to 40 deg C)