This is XH-W1209 Digital Thermostat Temperature Controller from the category Sensors | Temper/Humidity. Description: Range of the temperature control: -50 to 110 °CResolution: Other temperature ranges are 1 ° C, from -9.9 to 99.9 is 0.1 ° C.Measurement Precision: 0.1 ° CControl precision: 0.1 °CAccu..