Specification: Item Type: Central Air Conditioning Thermostat Material: ABS Sensor: AC801 A: Inflatable Diaphragm, AC801 C: Thermistor Voltage: 110-220V/AC, 50/60Hz Rated Current: 1A Constant Temperature Range: 10~30℃ Temperature Deviation: ≤1℃ at 25℃ Material And Color: Base, Cover and Pull Plate: White ABS plastic, pull switch: Hoary Relative Humidity: <92% (no condensation) Application: Used in commercial and civil buildings. Can control the central air conditioning terminal coil motor and water valve for heating and cooling. The measured temperature is compared with the set temperature by the logic circuit. When the relative temperature difference is greater than 1℃, the fan or electric valve is automatically started, and when the ambient temperature reaches the set temperature, the fan or electric valve is automatically closed. Package List: 1 x Thermostat 2 x Screw 1 x User Manual Note: Environmental Conditions: ‑20℃～55℃