High temperature alarm: when the measured temperature reaches the set temperature, the controller will sound an alarm. Temperature calibration: allows user to calibrate the temperature as needed. W3230 controller: automatically starts cooling or heating to maintain constant temperature. Temperature controller: set upper and lower limits to prevent accidents. LCD digital thermostat:可以选择 cooling or heating working mode. Description: - Can select cooling or heating working mode. - Set upper and lower limits to prevent accidents. - Automatically starts cooling or heating for constant temperature control. - Temperature calibration available for accurate readings. - High temperature alarm activates when set temperature is reached. Specifications: - Temperature range: -55 to 120°C - Control accuracy: 0.1°C - Display color: red and blue - Supply voltage: 12V - Data backup: yes - Relay capacity: 20A - Dimensions: 79 x 43 x 26mm - Panel cutout size: 74 x 39mm Note: - Manual measurement may result in a 1-3cm size variation. - Color may vary slightly due to lighting and screen resolution differences. - Product appearance may vary slightly from images. Package includes: 1 x Digital Temperature Controller 1 x Temperature Sensor