This is a very reliable humidity with countless of features that you will surely need. Adopt imported digital sensor from Switzerland with higher performance and higher . Standard guide rail structure design, simple wiring and easy to install.Features:With RS485 bus technology and industrial Mobus-RTU protocol to realize low-temperature and humidity status online monitoring.You don't have to distinguish between positive and negative electrodes and it still work even if connected to the opposite wire.Real-time detect the temperature and humidity condition.Easy to control the temperature and humidity change.Indoor and temperature and humidity measurement.Temperature and humidity monitoring in vegetable garden, warehouse, industrial field, computer room, laboratories, etc.Specifications:Model: -MD02Material: ABSPower Supply : DC8V48V (No positive and negative polarity distinguish, can be reversed polarity)Power: 0.1WTemperature Measuring : -40 125Humidity Measuring : 0 RHMeasuring Accuracy and Resolution: Temperature: 0.3, 0.1 Humidity: 3.0%, 0.1RHResponse Time: 2sCommunication Output Interface: Standard RS485, can achieve long-distance communicationSerial Baud Rate: 1200, 2400, 4800, 9600 customize by yourself (Two digits dial switch), the default 9600Byte Format: 8 Data Bits, 1 Stop Bit, No need to checkCommunication Protocol: Mobus-RTUCommunication address can be set: 163 (6 digits dial switch), the default 1Installation Method: Rail InstallationWide Applications: Temperature and humidity monitoring for industrial field, telecommunication base stations, warehouses, laboratories, factories, production workshops, agriculture greenhouse, computer room, museum, archives, library tube, hospitals, hotels, living quarters, petrochemical bases, power plants, nuclear power plants, substations, agricultural research base, health and epidemic station environmental protection departments.Item Size: 85 * 45 * 30mm / 3.3 * 1.8 * 1.2inItem Weight: 40g / 1.4ozPackage Size: 85 * 45 * 30mm / 3.3 * 1.8 * 1.2inPackage Weight: 40g / 1.4ozPackage List:1 * Temperature Humidity