Humidity transmitter adopts imported digital sensor from Switzerland. Standard guide rail structure design, simple wiring. Features: Adopts RS485 bus technology and industrial Modbus-RTU protocol to realize low-temperature and humidity status online monitoring. No need to distinguish between positive and negative electrodes, works even if connected to the opposite wire. Real-time detection of temperature and humidity condition. Supports indoor and outdoor temperature and humidity measurement. Used for temperature and humidity monitoring compatible with vegetable garden, warehouse, industrial field, computer room, laboratories. Specifications: Model: XY-MD02 Material: ABS Plastic Power Supply Range: DC8V-48V, no positive and negative polarity distinguish, can be reversed polarity Power: 0.1W Temperature Measuring Range: -40℃ to 125℃ Humidity Measuring Range: 0 to 100%RH Measuring Accuracy and Resolution: Temperature: ±0.3℃, 0.1℃; Humidity: ±3.0%RH, 0.1%RH Response Time: 2s Communication Output Interface: Standard RS485, supports long-distance communication Serial Baud Rate: 1200, 2400, 4800, 9600 customizable via two digits dial switch, default 9600 Byte Format: 8 Data Bits, 1 Stop Bit, no check required Communication Protocol: Modbus-RTU Communication address can be set: 1-63 via 6 digits dial switch, default 1 Installation Method: Rail Installation Wide Applications: Temperature and humidity monitoring compatible with industrial field, telecommunication base stations, warehouses, laboratories, factories, production workshops, agriculture greenhouse, computer room, museum, archives, library, hospitals, hotels, living quarters, petrochemical bases, power plants, nuclear power plants, substations, agricultural research base, health and epidemic prevention station, environmental protection departments. Item Size: 85 * 45 * 30mm / 3.3 * 1.8 * 1.2in Item Weight: 40g / 1.4oz Package Size: 85 * 45 * 30mm / 3.3 * 1.8 * 1.2in Package Weight: 40g / 1.4oz Package List: 1 * Temperature Humidity Transmitter