Features: This product gathers a wide range of modern heating and cooling technology. Small size, light weight, big range working voltage(AC90V~AC250V±10%50/60Hz). Simple operation, accurate measurement and anti-interference ability, etc. It suits most users in different environments for automatic intelligent control system of many kinds of refrigeration, heating equipment. The procedure has been set the power outage permanent memory function. Specifications: Plug Type: US Plug Working Voltage Range: AC90V~250V±10%50/60Hz Power Consumption: ≤3W Power Consumption of Standing-by: ≤0.5W Control Range of Temperature: -40℉~212℉(for US plug) Measurement Error: ±0.3℉ Precision of Temperature Control: 0.1℉ Separation Rate: 0.1℉ Slewing Range of Temperature: 0.1℉~50℉(adjustable) Temperature Sensor: NTC77℉=10K B3435±1%(1.5miter length, no positive or negative) Power Cable: 1.5 meters Relay: 10A/AC220V Working Environment Temperature: -30℉~150℉ Humidity: 90%RH none moisture condensation Size: 155*60*28.5mm/6.1*2.4*1.1in Weight: 305g(approx.) Malfunction Reminding: when the temperature sensor detects the up limited environment temperature of 2120F, it flashes HHH and turn off the output; when the temperature sensor detects the down limited environment temperature -40°F, it flashes LLL and turn off the output too. Note: 1, Please kindly make a note if you need any plug adapter. 2, To prevent high-frequency interference, do not install the sensor line bundled with the power line and loaded equipment line, but should be separated wiring. 3, Supply voltage must be consistent with the rated voltage and the deviation is less than ± 10%. Strict distinction between sensor installation, power line and loaded output interface. 4, The temperature control host machine cannot be installed in the place where is dripping water, or the elderly, children could be touched. Package Includes: 1 x Temperature Controller