Feature 1This temperature controller thermostat is a heating and cooling relay output. 2The thermostat sends out an alarm when the temperature exceeds the temperature limit or the sensor is wrong. 3This digital temperature controller has 2 temperature set points and is easy to use. 4The temperature controller can save all parameters after a short circuit, and the refrigeration control output delay protection. 5Used in aquarium, pet farms, home freezers, incubators, barbecue grills, water tanks, refrigerators, industrial coolers, steamers, industrial equipment and other temperature control systems.Item Type: Temperature Controller ThermostatTemperature Measurement Range: -40~100Product Voltage: 220V 50/60hzTemperature Control Range: 16~42Measurement Accuracy: 1; 5%Display Resolution: 0.1; 0.1%Input: Temperature and humidity sensorProduct Power Consumption: 3WWorking Environment Requirements: Temperature -10~60; relative humidity 20~85% (no condensation)Size: Approx. 92mm / 3.6in50mm / 2in70mm / 2.8in178mm / 7inWeight: Approx. 586 g / 20.7 oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xController2 xStickers1 xUser ManualNote1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.