... testing, Model150B250BCapacity180L250LTemperature range5-50°C5-50°CTemperature accuracy±1°C ±1°C Compressor power93W142WHeating power100W200WInterior materialStainless steelStainless steelPower supply220V 50Hz220V 50HzPackage size ... -minute delay, the control circuit can effectively protect cooling compressor.5) Micro computer control, legible LED display for automatic temperature control ...