Inkbird ITC-308S temperature controller with 1.97 Inches NTC Sensor Probe Plug and play design, easy to use Dual relay output, be able to connect with refrigeration and heating equipment at the same time Support reading with Centigrade or Fahrenheit unit Dual display window, be able to display measured temperature and set temperature at the same time Temperature calibration Compressor delay protection for refrigeration control High and low temperature alarms are available Over-temperature and sensor fault alarm Heating/cooling differential function could be set separately for refrigeration and heating to protect temperature controller from violent change Good for greenhouse, beer wine making, fermetation, reptile heat mat, bulbs, fans ectProduct Parameters:Temperature Control Range: -50~120 °C / -58~248 ° FTemperature Resolution: 0.1 ° C / 0.1 ° FTemperature Accuracy: ±1°C (-50~70°C) / ±2°F (-58~160°F)Input: 100 ~ 240VAC, 50Hz / 60HzTemperature Control Output Max: 10A, 100V ~ 240V ACRelay Contact Capacity Cooling: (10A, 100-240VAC), Heating: (10A, 100-240VAC)