Pass & Seymour® Self-Test GFCI tests itself every 3 sec. Upon failure, red light flashes to indicate need for device replacement. SafeLock™ Protection feature automatically disconnects power to receptacle if it detects that critical components are damaged and protection is lost, and automatic shutter system helps prevent improper insertion of foreign objects. Tamper-resistant device is available as 15 A/125 V or 20 A/125 V duplex receptacles, both with dual-direction test and reset buttons.