Green LED indicator should always be ON. ONLY if GFCI is malfunctioning, the LED indicator will turn OFF.(After it was tripped , the LED light stil lights up green )
1.TR (Tamper Resistant) can protect children from sticking objects into the outlet and improper insertion of foreign objects.
2.Weather-Resistant design make the receptacle moisture-proof and resistant to atmospheric corrosion.
This GFCI receptacle has got ETL certification and the fireproof poly-carbonate housing keeps you away from fire risk. Cannot be reset if mis-wired.