Application :it is suitable for granary ,warehouse, computer room ,farm, incubation room, textile industry and other heating /cooling humidification / dehumidification place Outdoor terminal box, power distribution box (automatic heating and dehumidification), prevent creepage caused by a variety of misoperation accident automatic heating and dehumidification high-voltage power distribution unit and the high-pressure switch mechanism box indoor, automatic heating in low environment, prevent switch to stopping working because of low temperature Features:Display temperature and humidity,you can use different model to control output of the change of temperature and humidity, and the function of RS485. High-performance, high-precision, durable,Temperature Sensor can work for a long time in different place Model: MH0302 Supply: 85~250VAC,50-60HZ Power consumption: ≤2W Resolution ratio: 0.1 Control output: 3A,250VAC(Resistance Load) Display LED Temperature set range: -40~120 Celsius Humidity set range: 0-99.9%RH Turn difference set Temperature: 0-9C, Humidity: 1-9%RH Accuracy Temperature: +-1C, Humidity: +-5%RH Ambient Temperature: -10C to 50 Celsius Ambient Humidity: 45 to 85%RH Mechanical Life At least: 3000,000 times Output mode setting value for Output mode type 001= Heating,humididicatio / 002=Heating,dehumididication/ 003=Cooling, humididication / 004=Cooling,dehumididication Colour:Black Material:ABS+electronic components Size:8.0 x 8.0 x 10.0 cm Package Contents: 4 x Temperature & humidity controller MH0302 4 x Temperature & humidity combined sensor in 3meter length cable 4 x User Manual Only the above package content, other products are not included. Note: Light reflection 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.