Advanced 4-Channel Relay System with RS485 and RS232 Interface

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Certification: FCC
Condition: New
Gold Member Since 2025

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  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
  • Advanced 4-Channel Relay System with RS485 and RS232 Interface
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  • Overview
  • Specification
  • Company Profile
  • Certifications
  • FAQ
Overview

Basic Info.

Model NO.
WJ70-485
Working Mode
Continuous
Installation
DIN35 Rail-Mounted
Usage
Paper Machinery, Elevator, Stage Machinery, Machine Tool, Food Machinery, Construction Machinery, Metallurgical Machinery
Power Source
Pneumatic
Features
Support Modbus RTU Communication Protocol
Features1
4-CH Di 4-CH Relay Output
Features2
DIN35 Rail-Mounted
Input Type
Switch Input, 4 Channels (Di0~Di3)
Input Resistance
3K
Communication Response Time
100 Ms Maximum
Advantage
High Reliability, Easy Programming, Easy Applicati
Transport Package
Wayjun
Specification
120 mm x 70 mm x 43mm
Trademark
wayjunr
Origin
Guangdong, China
Production Capacity
99999

Product Description

4-ch DI 4-ch Relay Output, RS485/232 Remote Data Acquisition Module I/O
(WJ70 Series) 
Features:
>> Four switch input, four relay output
>> Can read input level status via the RS-485/232 interface
>> Can set output state via the RS-485/232 interface
>> Input/output/power supply: three-isolation (1500VAC)
>> Isolation between each input,isolation between each output
>> Wide power supply range: 8 ~ 32VDC
>> High reliability, easy programming, easy application
>> DIN35 Rail-mounted
>> Can programme setting module address,baud rate
>> Support Modbus RTU communication protocol
>> Dimensions: 120 mm x 70 mm x 43mm
Applications:
>> level signal measurement, monitoring and control
>> RS-485 remote I / O, data acquisition
>> Intelligent building control, security engineering applications
>> RS-232/485 bus in industrial automation control system
>> Industrial signal isolation and long-term transmission
>> Equipment operation monitoring
>> Sensor signal measurement
>> Industrial data acquisition and recording
>> Medical, industrial product development
>> Switching signal acquisition 
Product Overview:
 WAYJUN WJ70 series products realize the signal acquisition between sensor and host, to measure the switching signal.
WJ70 series can be used in RS-232/485 bus industrial automation control system,switching signal measurement,
monitoring and control, high and low level signal measurement,industrial field signal isolation and long-term industrial
transmission and so on.
Products include power supply conditioning, switch acquisition, switch out and RS485 serial communication.Each
serial interface can connect up to 255 pieces WJ70 Series modules, communication using ASCII code or MODBUS
RTU communication protocol, and its instruction set compatible with the ADAM modules, baud rate can been set by the
code, with other manufacturers control module hang in the same RS-485 bus for easy programming. 
Advanced 4-Channel Relay System with RS485 and RS232 Interface
Advanced 4-Channel Relay System with RS485 and RS232 Interface
Specification
Product Selection
WJ70 -


Communication Interface
485: output is RS-485 interface
 232: output is RS-232 interface

Sample 1: part No.: WJ70-232 means output is RS-232 interface
Sample 2: part No.: WJ70-485 means output is RS-485 interface







Company Profile
Advanced 4-Channel Relay System with RS485 and RS232 Interface
Shenzhen Weijunrui Technology Co., Ltd
Since: 2011
Specialty: The company's main products include analog acquisition modules, signal isolators/conversion modules, and signal transmitters
Capacity: Produce 10000 per month
Advanced Features:
Switching to TCP/network/remote IO module, Modbus RTU to TCP, RS232/485 to Ethernet, analog signal (current/voltage/thermistor/frequency/displacement/speed/pulse) isolation transmitter, mV differential signal amplifier, isolation amplifier, micro power DC-DC module power supply, etc
Advanced 4-Channel Relay System with RS485 and RS232 Interface
Advanced 4-Channel Relay System with RS485 and RS232 Interface
Global Showrooms
Factory Capabilities
WJ70 General parameters:
 (typical @ +25 ℃, Vs is 24VDC)
Input type: switch input,4 channels (DI0~DI3)
 Low level: input <1V
 High level: input 4 ~30V
Input Resistance: 3K
Output type:C type relay signal output,4 channels (DO0~DO3) .Normally open/normally closed and public
 Contact load capacity: 1A 125VAC or 2A 30VDC .
 Contact form: 2Z
 Maximum switching voltage: 240VAC / 120VDC
 Maximum switching current: 2A
Communication: RS-485 protocol or RS-232 standard characters protocols and MODBUS RTU communication protocol 
Baud Rate (2400,4800,9600,19200,38400 bps) can be selected via software
Address (0 to 255) can be selected via software
Communication Response Time: 100 ms maximum
Power Supply: +8 ~ 32VDC wide range power supply, internal anti-reverse and over-voltage protection circuit
Power Loss: less than 0.5W
Operating Temperature: - 45 ~ +85℃
Humidity: 10 ~ 90% (no condensation)
Storage Temperature: - 45 ~ +85℃
Storage Humidity: 10 ~ 95% (no condensation)
Isolation Voltage: Isolation between each input,isolation between each output. Input/output/power supply: three-isolation
(1500VAC)
Dimensions: 120 mm x 70 mm x 43mm 
WJ70 products are according to industry standard design, non-isolation between signal input / output, high
anti-interference ability and reliability. Operating temperature range is - 45 ~ +85 °C.
Function Description:
WJ70 remote I/O module can be used to measure 4 channels switching signal, and 4 channels relay signal
output.4-channel C type relay signal output,there are often open and close nodes.
1. Switch signal input and output
4 channels switching signal Input, can connect dry contact and wet contact.Details refer to the wiring diagram.
2. Communication protocol
Communication Interface: one channel standard RS-485 communication interface, or one standard RS-232
communication interface, specify when ordering.
Communication Protocols: supports two protocols, characters protocol of the command set defined and MODBUS
RTU communication protocol. Can be programmed using the kind of communication protocol, can be
achieved with PLC, RTU of many Brands or computer monitoring system for network communication.
Data Format: 10 Bits. 1 start bit,8 data bits,1 stop bit.
Address: (0 to 255) and baud rate (2400,4800,9600,19200,38400 bps) can be set, the most long-distance about
communication networks is up to 1200 meters, through the twisted-pair shielded cable.
Communication interface of high anti-jamming design, ± 15KV ESD protection, communication response time is less
than 100mS.
3. Anti-jamming
According to need to set the checksum. Module internal has transient suppression diodes, can inhibit a variety of
surge pulse, protection module, and internal digital filter can also be well suppressed from the grid frequency
interference. 
Certifications
FAQ
Q: How to contact you?
A: Please contact us via email or online customer service

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