Dual temperature controller This digital temperature controller STC 3008 can control two devices simultaneously with independent sensor and output. Power Supply: AC 90V~250V. Output relay contact capacity: 10A max. Heating and cooling function Cooling and heating mode can be switched automatically. Temperature control range: -50~120, measurement accuracy: 0.1, temperature control accuracy: 1. It also supports temperature calibration(-30~30). Easy to program This digital temperature controller 220v controls the device to work by setting start temperature and stop temperature. You can set delay start time to protect your cooling equipment and low/high temperature alarm for safe use. More functions LED display. Dual NTC 10K sensors probes. Temperature calibration. Refrigerating control output delay protection. Alarm when temperature exceed setting limit or sensor error. All parameters set can be saved when power off. Application This temperature controller thermostat can be used for incubator, terrarium, freezer, refrigerator, heater, fridge, homebrew, vivarium, fermentation, industrial equipment and other temperature-controlled system.