ITEM NAME:DC Fahrenheit Digital Temperature Thermostat Controller Switch Temp Control Descriptio n Features: 100% brand new and high quality Specifications: Size: Approx. 1.44*1.44*0.71inch / 36.5 * 36.5 * 18mm Installation screw: M3 * 2 diagonal size 39.5mm Temperature range: 20-90 ℃ Control Mode: Heating, Cooling, Heat dissipation Control Accuracy: 0.1 ℃ Hysteresis Setting: 1-10 ℃ Refresh Rate: 0.5S Supply Voltage: DC 12V Output Voltage: DC 12V Output Power: Max 200W Static Current: ≠¤ 3MA, attract current ≠¤ 60MA Temperature Probe: 10K thermistor B25 = 10K 3950 0.5M Waterproof Sensor Environmental Requirements: -10 ~ 60 ℃ Humidity 20% -85% Can be used in the (liquid, mold, space) and other control heating, Also can be used (box, the device, water, pet rooms, air.Refresh Rate: 0.5S. Temperature range: 20-90 ℃. Temperature Probe: 10K thermistor. Indicator Status : the red light is on indicating the cooling (+ C-) output, and the light is off indicating heating (-H +) output.