High temperature alarm, when the temperature reaches the setting temperature, the controller will alarm Temperature calibration, you can calibrate the temperature as needed W3230 controller, automatically start cooling or heating for constant temperature Temperature controller, set upper upper/lower limit to prevent accidents LCD digital thermostat can select cooling or heating working mode Description Can select cooling or heating working mode. Set the lowest/lowest upper limit to avoid crashes. Automatically start cooling or heating for constant temperature. Temperature calibration, you can calibrate the temperature as needed. High temperature alarm, when the measured temperature reaches the setting temperature, the controller will alarm. Specification: Temperature range: -55-120. Control temperature accuracy: 0.1. Supply voltage: 12V. Relay: 20A. Dimensions: 79*43*26mm. Hole size: 74*39MM. Package includes: 1 x Digital Temperature Controller 1 x Temperature Sensor