Description IoT temperature and humidity sensor with RJ45 network interface; supports DHCP protocol; device parameters can be configured via web page; supports HTTP GET method to return temperature and humidity data in fixed JSON format; MQTT communication protocol version: supports DHCP and DNS, configurable MQTT server IP address, port, username, password, ClientID, Topic, Message, etc.; after configuring MQTT server parameters, it can actively connect to the server to periodically report collected temperature and humidity data; if barometric pressure is included, it can also report barometric pressure data; Modbus communication protocol version: supports DHCP, supports configuring TCP Server, TCP Client, and UDP Server modes, configurable Modbus address, TCP Server and TCP Client modes support Modbus… TCP; HTTP Communication Protocol Version: Supports DHCP, allows configuration of server IP address, port, reporting interval, URL path, and HTTP messages. The device periodically and proactively connects to the server, sending messages via POST. Power Supply Options: 220V or PoE. PoE powered version requires a PoE switch for direct power supply. For custom DC power supply, please contact the seller. Standard probe cable length is approximately 1.5M. Other cable lengths can be customized by contacting us. Measurement Range: Temperature: -40~ 80°C  Humidity: 0~99.9% RH Accuracy (at 25°C): Temperature: ±0.5°C Humidity: ±3%RH (10..90%RH) Resolution: Temperature: 0.1°C Humidity: 0.1% RH Attenuation: Temperature: <0.1°C/year Humidity: <1%RH/year Sensor Type: Temperature: Resistive sensor Humidity: Capacitive sensor