This is a highly reliable humidity sensor with countless features you're sure to need. Uses imported digital sensor from Switzerland with higher performance and higher accuracy. Standard design with guide rails, easy wiring, and easy to install. Features: Utilizes RS485 bus technology and industrial Mobus-RTU protocol to realize online monitoring of low temperature and humidity. No need to distinguish between positive and negative electrodes, it still works even if connected to the wrong wire. Detects real-time temperature and humidity conditions. Easily monitor temperature and humidity changes. Indoor and outdoor temperature and humidity measurement. Temperature and humidity monitoring in vegetable gardens, warehouses, industrial fields, computer rooms, laboratories, etc. Specifications: Model: -MD02 Material: ABS Power Supply: DC8V-48V (No difference between positive and negative polarity, can be reverse polarity) Power: 0.1W Temperature Measurement: -40 ~ 125℃ Humidity Measurement: 0 ~ 100% RH Measurement Accuracy and Resolution: Temperature: ±0.3℃, 0.1℃ Humidity: ±3.0%, 0.1%RH Response Time: 2s Communication Output Interface: Standard RS485, can achieve long-distance communication Serial Baud Rate: 1200, 2400, 4800, 9600 self-adjust (Two-digit dial switch), default 9600 Byte Format: 8 data bits, 1 stop bit, no parity bit Communication Protocol: Mobus-RTU Communication Address can be set: 1-163 (Six-digit dial switch), default 1 Installation Method: Rail mounting Wide Applications: Temperature and humidity monitoring for industrial fields, telecommunication base stations, warehouses, laboratories, factories, production workshops, agricultural greenhouses, computer rooms, museums, archives, libraries, hospitals, hotels, residences, petrochemical bases, power plants, nuclear power plants, substations, agricultural research bases, health and epidemic stations, 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 and Humidity Sensor