It gives the refrigerator temperature and also that of the room, place the sensor inside the fridge (the wire does not prevent the door from closing) and place the thermometer is on the wall or elsewhere (more way fix are provided).
The product works well when the temperature exceeds the set threshold, it rings, it will ring regularly until the temperature will not back down (this can take some time).
The only small problem is that the suction cup to the sensor sticks badly.
The product is effective and practical, I hope never let my open fridge by accident now.
