Temperature Measuring Range: -50~99C; Resolution: 0.1C; Accuracy: 1 (-50~70C); with 90cm sensor probe. Alarm for Safety: Refrigeration control output delay protection, Dual heating and cooling function, Alarm when the temperature exceeds the limit or when the sensor error. Automatic Heating and Cooling: This digital temperature controller with sensor can control the equipment to heat or cool automatically. Automatically switches modes between cooling and heating, keeping the devices at the desired temperature. Easy to Connect and Program: Connect the controller and device to the power supply and connect the temperature probe, then you can program by simply setting the temperature value and the difference value. You can also set the delay time and the temperature calibration value. Wide Range of Applications: This temperature controller thermostat can be used for home freezer, water tank, refrigerator, aquarium, home brewing beer, chicken incubator, etc., also suitable for laboratory use and other temperature controlled systems. Output: 2 Relays Temperature measuring range: -50 ~ 99 C Difference set value: 0.3 ~ 10 C Resolution: 0.1 C Accuracy: 1 C (-50 ~ 70 C) Power supply: AC 110-220V 50Hz / 60Hz Power consumption: < 3W Sensor: NTC sensor Sensor error delay: 1 minute Relay contact capacity: Cooling (10A / 240VAC) / Heating (10A / 240V AC) Ambient temperature: 0 ~ 60 C Storage temperature: -30 ~ 75 C Relative humidity: 20 ~ 85% (non-condensing) Product size: 75 * 34.5 * 85mm (L * W * D); Sensor Length: 1m (include probe) Package Included: 1 x STC-1000 Temperature Controller 110-220V 1 x 1m Sensor Probe 1 x Manualluckymeet