WTR10-E Temperature and Humidity Transmitter features a high-precision digital sensor with reliable performance, high accuracy, low annual drift, and fast response speed. It uses RS485 bus technology and the industrial MODBUS-RTU communication protocol for real-time temperature and humidity monitoring. Key Features: 1. High-precision digital temperature and humidity sensor with high sensitivity, excellent stability, and full-range automatic temperature compensation 2. Microcontroller unit (MCU) based on STC’s high-quality, low-power chips for enhanced processing capability and reliability 3. Standard RS485 output for long-distance communication 4. Compliant with industrial MODBUS-RTU communication standards 5. Real-time temperature and humidity detection; suitable for indoor and outdoor environments, greenhouses, warehouses, industrial facilities, data centers, laboratories, and more Specifications: Model: WTR10-E Housing Material: Plastic Power Supply: DC 9V–40V (polarity-insensitive) Power Consumption: < 0.1 W Temperature Measurement Range: -40°C to +85°C Humidity Measurement Range: 0–100% RH Accuracy: Temperature ±0.3°C, Humidity ±3.0% RH Resolution: Temperature 0.01°C, Humidity 0.024% RH Response Time: 2 seconds Communication Interface: RS485 Baud Rate Options: 2400, 4800, 9600, 19200 bps (selectable via DIP switch; default: 9600) Data Format: 8 data bits, 1 stop bit, no parity Communication Protocol: MODBUS-RTU Device Address Range: 1–253 (set via DIP switch; default: 1) Mounting: DIN rail installation Dimensions (Unit): 65 × 45 × 29 mm (2.56 × 1.77 × 1.14 in) Weight (Unit): 40 g (1.41 oz) Package Dimensions: 13 × 13 × 3 cm (5.12 × 5.12 × 1.18 in) Package Weight: 45 g (1.59 oz) Package Includes: 1 × Temperature and Humidity Transmitter 1 × User Manual