Be to control temperature and humidity at the same time.Be to connect with humidifier and dehumidifier equipment at the same time. Be to connect with refrigeration/ heating and humidifier/dehumidifier equipment at the same time. Heating/Cooling function could be set separately for refrigeration and heating to temperature controller from violent change. Same as humidity Control. Supporting Temp and Humidity Calibration [Dual Display Window] Be to display measured temperature/humidity and set temp/humidity at the same time Model: XK-W1099 Input voltage: 110~220V Measuring temperature range: 0°C~+80°C Measuring humidity range: 1%RH~+99%RH Accuracy: ±1°, 0.1%RH Relay output contact capacity: 10A Direct Output Shell material: PC + ABS fireproof Sensor length: 1m Set startup temperature( hunidity): the "up" button once to display the starting temperature(humidity). Long the "up" button for about 3 seconds,The required temperature(humidity) can be set by the up and down keys Set the stop temperature( hunidity): the "down"button once to display the stop temperature(humidity). Long the button for about 3 seconds and the stop temperature(humidity) number flashes. The required temperature(humidity) can be set by the up and down keys temperature ( hunidity) correction: "up" and "down button at the same time. How to reset the product: "down 1" and "down 2" for 3 seconds. colour:gray white Material:ABS size:8x6x3cm Package Contents: 2 x Temperature Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.