1、- 40 ~120 centigrade degree wide temperature measuring range 2、With large and clear LED display for better readability 3、Compatible with refrigeration and heating control 4、Return difference is adjustable (1-30℃) 5、With delay start function Descriptions: This mini temperature controller, with heat and cool control, can set both a high and a low temperature limit, when the temperature is beyond the compass of limits, it will cool or heat automatically. Features: - 40 ~120 centigrade degree wide temperature measuring range. With large and clear LED display for better readability. Compatible with refrigeration and heating control. Return difference is adjustable (1-30℃). With delay start function. Temperature upper and lower limit setting function, factory parameter locking function. Support to restore factory settings. Support power-down storage (sudden power-off settings are still valid). Supports temperature correction. Scope of application: 1. It is widely used in cold storage, cold storage and operation table of various refrigeration management. 2. It is suitable for large-scale farming households with high environmental temperature requirements. 3. Scientific research. 4. Home temperature control. Specifications: Product model: MH1210A Working voltage: DC12V, DC24V, AC110V, AC220V(Optional) Working current: MAX200mA Temperature control: -40 ℃ to 120 ℃ Measurement error: ± 0.5℃ Display accuracy: 0.1℃,  control accuracy: 1 ℃ Temperature sensor: NTC (10K/3435) Working temperature: 0 ℃ to 60 ℃ Storage temperature: - 10 ℃ to 60 ℃ Humidity: 90% RH without moisture condensation Data storage: yes Temperature controller size: 8.5 x 7.5 x 3.5cm/ 3.35 x 2.95 x 1.38inch Sensor: probe: 4 x 25mm/ 0.16 x 0.98inch, cable: 1m/ 39.37inch Weight: 141-211g Package Included: 1 x Digital Temperature Controller 1 x Sensor