Industrial grade high-precision temperature and humidity signal conversion to RS485 and Modbus RTU acquisition module WJ801
Product features:
Supports Modbus RTU protocol for reading temperature and humidity
Typical relative humidity accuracy ± 3% RH
Relative humidity measurement range: 0~100% RH
Typical temperature accuracy ± 0.3 ℃
Temperature measurement range -40~+85 ℃
Wide power supply range: 5~30VDC
High reliability, convenient programming, and easy application
User programmable module address, baud rate, etc
Supports screw installation and DIN35 rail installation
External dimensions: 70mm x 45mm x 30mm
Typical applications:
Smart Factory
Agricultural greenhouses
Cold chain warehousing
Meteorological station
Hospitals
High end residential properties
Product Overview:
The WJ801 product realizes the collection of humidity and temperature signals, and supports accessing temperature and humidity data through the Modbus RTU protocol.
The WJ801 product can be applied to the smart factory MES system, agricultural greenhouse temperature and humidity collection, smart warehouse temperature and humidity monitoring, and small meteorological station data reporting,
Real time monitoring of hospital environment, comfort testing of high-end residential buildings, and so on.
The product includes a high-precision temperature and humidity sensor and a high-performance MCU main control chip. Each serial port can connect up to 255 WJ801 series modules
Block, communication mode adopts MODBUS RTU communication protocol, baud rate can be set by communication, and can be hung on the same RS-485 bus with control modules from other manufacturers
Online, convenient for computer programming.
The WJ801 series products are designed and manufactured according to industrial standards, with strong anti-interference ability and high reliability. Working temperature range -40 ℃ to+85 ℃.
Function Introduction:
The WJ801 remote I/O module can be used to measure humidity and temperature.
1. Signal input
Humidity and temperature.
2. Communication protocol
Communication interface: 1 standard RS-485 communication interface.
Communication protocol: MODBUS RTU communication protocol.
Data format: 10 digits. 1-bit start bit, 8-bit data bit, 1-bit stop bit. No verification.
The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set; communication
The longest distance of the network can reach 1200 meters and is connected through twisted pair shielded cables.
High anti-interference design of communication interface, ± 15KV ESD protection, communication response time less than 100mS.
3. Anti-interference
Parity can be set as needed. There are transient suppression diodes inside the module, which can effectively suppress various surge pulses and protect the module
Digital filtering can also effectively suppress power frequency interference from the power grid.
Product model:
WJ801- □
communication interface
485: Output to RS-485 interface
Product manual：https://www.wayjun.cn/d/
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