This reliable humidity sensor features advanced functionality for accurate environmental monitoring. Equipped with an imported digital sensor from Switzerland, it delivers high performance and precision. The standard guide rail design allows for simple wiring and easy installation. Key Features: - Utilizes RS485 bus technology with industrial Modbus-RTU protocol for online monitoring of temperature and humidity in low-temperature environments - Polarity-insensitive power connection: no need to distinguish positive and negative wires; device operates correctly even if wires are reversed - Real-time detection of temperature and humidity conditions - Enables effective monitoring and control of environmental changes - Suitable for indoor temperature and humidity measurement - Ideal for use in vegetable gardens, warehouses, industrial facilities, computer rooms, laboratories, and similar environments Specifications: - Model: MD02 - Material: ABS - Power Supply: DC 8–48V (polarity insensitive, supports reversed connection) - Power Consumption: 0.1W - Temperature Measurement Range: -40°C to 125°C - Humidity Measurement Range: 0–100% RH - Accuracy and Resolution: - Temperature: ±0.3°C accuracy, 0.1°C resolution - Humidity: ±3.0% RH accuracy, 0.1% RH resolution - Response Time: 2 seconds - Communication Output: Standard RS485 interface for long-distance transmission - Baud Rate: 1200, 2400, 4800, 9600 bps (user-selectable via two-digit dial switch; default: 9600) - Data Format: 8 data bits, 1 stop bit, no parity - Communication Protocol: Modbus-RTU - Address Setting: Adjustable from 1 to 63 (via 6-digit dial switch; default: 1) - Installation: DIN rail mount - Applications: Industrial sites, telecommunications stations, warehouses, laboratories, factories, greenhouses, data centers, museums, archives, libraries, hospitals, hotels, residential areas, petrochemical plants, power stations, substations, agricultural research facilities, and environmental monitoring stations Dimensions and Weight: - Unit Size: 85 × 45 × 30mm (3.3 × 1.8 × 1.2 inches) - Unit Weight: 40g (1.4 oz) - Package Size: 85 × 45 × 30mm (3.3 × 1.8 × 1.2 inches) - Package Weight: 40g (1.4 oz) Package Contents: 1 × Temperature and Humidity Sensor