Features: 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: Model: MH1210W Temperature control range: -50~110 °C Temperature measurement error: ±0.5 °C Sensor model: NTC(10K/3435) Display accuracy, control accuracy: 0.1 °C Working voltage: AC 90-250V Working current: Max200mA Control output: AC10A/220V Data preservation: yes Working temperature: 0-60 °C Storage temperature: -10~60 °C Size: 8.5 x 7.5cm / 3.35 x 2.95in Weight: 131g 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 .