Food will stay fresher for longer when it is stored at the right temperature and a buildup of bacteria can also be avoided aids you to keep fridges at the right temperature 5 7 c and fridges at least 18 c easy to attach and detach with hook and eye fastening glued mounting on back of the thermometer technical details measuring area 30 to 30 c can be switched to show c and f min max data storage for temperature size 5 x 5 cm comes supplied with a battery