The GB Circuit and Receptacle Tester #GRT-500A is a household receptacle tester. This unit has three LEDs that tell you if your receptacle is wired correctly. It senses open ground, open Neutral, open hot, hot/ground reverse, hot/Neutral reverse, and correct. A must for anyone utilizing receptacles that you have never used before. Always play it safe. This is a must have for all.
Prop65 WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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