Audio/Visual Refrigerator/Freezer Alarm,-58 to 158F/-50 to 70C,audio/visual alert,signal sounds at 15 or 45F/-9.4 or 7.2C,displays room & refrigerator/freezer temps,39"/1 m sensor cable,shatterproof,ABS plastic,sliding mode switch,Velcro /suction,one AA alkaline battery included