7Semi RS485/MODBUS Temperature & Humidity Sensor Probe 0.2C, 1.8% RH

Resources

User Guide and Sample Code
How to Install 7Semi Arduino Library
Modbus Tester Tool qModMaster

Reliable RS485 Temperature And Humidity Monitoring For Industrial Automation and Control System Applications
The 7Semi Industrial RS485 Temperature and Humidity Sensor Probe is designed for accurate and stable measurement in demanding industrial and commercial environments. With Modbus RTU communication over RS485, it supports reliable long distance data transfer and easy integration with PLC, SCADA, HMI, and microcontroller based systems. Its stainless steel probe and breathable dust-proof filter make it suitable for continuous use in HVAC, building automation, and industrial monitoring applications.
This sensor helps maintain precise environmental control across server rooms, museums, archives, greenhouses, weather stations, and process control systems. A wide 9V to 36V DC input range, 2-meter cable, DIP switch-based configuration, and simple 4-wire connection make installation practical for new and existing setups. It is built for users who need dependable readings, long-term stability, and straightforward system integration.
Features

RS485 Modbus RTU Output: Supports standard Modbus RTU communication for stable industrial data exchange.
Wide Temperature Range: Measures temperature from -40C to +125C.
Full Humidity Range: Measures humidity from 0% RH to 100% RH.
High Accuracy: Delivers 0.2C temperature accuracy and 1.8% RH humidity accuracy at 25C.
Wide Input Voltage: Operates on 9V to 36V DC for flexible power compatibility.
Easy Configuration: DIP switch allows Modbus ID and baud rate setting.
Simple 4 Wire Connection: Connects through VCC, GND, RS485 A+, and RS485 B-.
Durable Probe Construction: Stainless steel probe with breathable dust-proof filter supports use in harsh conditions.
Multi Application Use: Suitable for HVAC, building automation, smart agriculture, environmental sensing, and industrial process monitoring.