The self-test GFCI conducts an automatic test every three seconds, ensuring it''s always ready to protect. If the device fails the test, the indicator light flashes to signal that the GFCI should be replaced. It also has the proven SafeLock™ Protection feature: if critical components are damaged and protection is lost, power to the receptacle is disconnected.• Amp: 15• Volts: 125• Color: Black• 2 pole• 3 wire grounding• Features safe lock protection, if critical components are damaged & ground fault protection is lost power to receptacle is disconnected• Unbreakable thermoplastic construction• UL, CSA certified• Window box.