there is this wall electrical outlet near a sink and it is making these clearly audible clicking noises every 1 or 2 minutes (but i have heard happen in less than 60 seconds), there is another one in the bathroom of the same kind (has a tiny integrated light inside the outlet) and it also makes these clicking noises. They do not make any noise when the breaker on the outlet is tripped. It is not a buzzing sound. I have a light plugged into one and it seems to function normally. it does not seem to flicker when the clicking noise occures. why is it making this noise? is there also any chance of a fire hazard?