Features: This product gather a wide range of modern heating and cooling technology, 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. Refrigeration and heating mode could be set through the menu, the procedure has been set the power outage permanent memory function. Small size, and easy to operate Compatible with refrigeration and heating control. Return difference can be adjusted It has delayed start function, temperature limit setting function. Support to restore factory settings, support power outage storage, support temperature correction Applicable to all kinds of cold storage, farm, scientific research, home temperature control. Specifications: Working voltage: 12V Measurement range: -40~120 °C ; measurement error: ±0.5°C; Control range: -40°C~120°C; separation rate: 0.1 °C, slewing range of temperature: 1 ~30°C; Temperature sensor: NTC 25°C=10K B3435 ±1% Output load: normally open 10A/AC220V Working environment: temperature - 20~70 °C ; humidity: 90%RH none moisture condensation Size: 75 x 34.5 x 85mm / 2.95 x 1.36 x 3.35in Weight: 141g Package included: 1 x Temperature Controller 1 x probe Note matters: 1. 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; 2. 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; 3. The temperature control host machine cannot be installed in the place where is dripping water, or the elderly, children could be touched; 4. The wiring should be checked whether the line is correct, to avoid accidentally burn of temperature control host machine and loaded equipment, installed applications supporting protection back cover obscured