Walk-in vaccine cold room temperature is -5℃～8℃. It is used to store various vaccines that cannot be stored under ambient temperature conditions. Under low temperature conditions, the activity of the vaccine can be prolonged and the shelf life of the vaccine can be extended. The refrigeration control system of the vaccine cold rooms is designed with automatic microcomputer electrical control system consist of intelligent temperature controller,high-precision temperature sensors,automatic alarms,and digital temperature display. Equipped with temperature and humidity recorder and no manual operation required, Mether vaccine cold rooms ensure the maximum safety for the storage.