Our detector chirped one time when some water got to it. I have the Samsung as well and while washing the coach some water got in through the outside fridge cover which RV Outfitters had "sealed" with duct tape on the inside. Anyway, I must have sprayed some water in and it worked its way to the unit as Margaret said "There's a beeping going on and a little water on the floor" (which wound up being just beneath the device - as relocated by RV Outfitters just beneath the fridge).
I recycled the switch and now make sure I don't put direct spray on the outside fridge cover and haven't had another issue with it.
Mike