Description: Mini temperature and humidity controller. Dual window large and clear LED display for better readability. Wide temperature measuring range. Temperature control, humidity display. Temperature calibration function. Buzzer alarm: High and low temperature alarms are available when the temperature is over or the sensor is with issue. All parameters can be set to restore factory settings, set memory, self-diagnosis after short circuit. Can be used for high-end air-cooled beverage cabinet, freezer, seafood machine, water chiller, refrigerate engineering, kitchen cabinet and so on. Specification: Power:12V Outer transformer Temperature sensor: NTC-103, 1pcs, 2M length,not separate with positive and negative Humidity sensor:1pc, humidity display range:00-99% Accuracy 03% Temperature display range:-45C~80C Accuracy 01C Temperature control range:-45C~80C factory set 0.5C Outsize:176mm(L)41mm(W)43mm(D) Hole size:138mm(L)32.5mm(W) Working temperature:-10~60C ;RH:20% ~90% (non condensing) Relay touch volume:compressor:30A/250VAC Lighting:10A/250VAC Fan:10A/250VAC Functions: - Refrigeration, defrost, defog, lighting, on/off, lock the keyboard, double sensor, temperature calibration, humidity calibration - Dual window display, temperature control, humidity display - Lighting, fan control - Manual/automic defrost; time/temperature defrost; - Over temperature alarm, delay alarm - Press the button to turn on/off - 30A relay support, 30A can be applied directly to 1 compressor - Restore factory settings, set memory, self-diagnosis. Size: Machine size: Approx. 17.6x4.1x4.3 cm / 6.93x1.61x1.7 inches Hole size: Approx. 13.8x3.25cm / 5.43x1.28 inches Package Includes: 1 piece temp and humidity controller 1 piece Temp sensor Note: Please allow 1-3cm error due to manual measurement, pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item, pls understand, thank you