Specifications · Temperature range:-45 to 45oC · Accuracy: ±1oC · Sensor:NTC, 1pc · Power supply: 230VAC or 120VAC 50/60Hz · Compressor: 20A / 1HP · Light: 5A / 250 Sf-518 temperature controller manual the remote temperature sensor(s) to control the room temperature (See figure 1 above). Should you wish, you can easily Do not touch the LCD display by hand. Do not place heavy items on the device. Keep this unit away from the heat, direct sunlight, strong mechanical vibration, manual/automatic defrost by turning off. Celsius/Fahrenheit degrees. SF-518. Highest and lowest temperature record. The alarm function.Model: SF-518 Digital Temperature Controller Manual start/stop defrost: Manual, automatic/defrost by turning off / Light Control/Value Storing/ Model: SF-101S-2 Digital Temperature Controller. Front Panel Operation. 1 . Set temperature. Press button, the set temperature is displayed. Temperature Contoller. Digital Temperature Controller for Refrigerating. SF-213. SF-518 Manual, automatic defrost by turning off. Brand: SHANGFANGModel: SF-518 Features Temperature ControlHighest and lowest temperature recordThe alarm functionThe alarm single outputManua,automatic