... ., ltd., Haier group, Meiling group, Xinfei corporation and so on. The system can test many performance parameters of refrigerator, such as temperatures ... cooler should be tested for each testing point.3. System composing3.1 The system bases on 485 bus, using 1 set computer to ... : –50°C~+80°C, testing accuracy: ±0.5°C, minimum unit:0.1°C4.2 Power supply :AC220V/50Hz±10%4 ...