... technical requirements. ·Class A rated GFCI. ·Automatic end of life detection and warn functions , when GFCI fails, the red ... current's impulsion instantaneously. ·Over 3000 times operational life, ·Resist shock,heat,corruption and moisture. ·Safelock design ... and reliable. · Adopt standard appearance size, assure convenience of installation. ·Wiring screw adopts improved tension disc construction, ...