DC 12V 8 Ch RS485 Relay Board Modbus RTU UART Remote Control Switch DIN35 Rail Box for PLC Automation Control
SPECIFICATIONS
Application: Computer
Brand Name: eletechsup
Bus Interface: RS485
Channels: 8
Choice: yes
Condition: New
Dissipation Power: 2W
High-concerned chemical: none
Operating Temperature: -40-80
Operating Voltage: DC 12V
Origin: Mainland China
Rail: DIN35 C45
Standby current: 12MA
Supply Voltage: DC 12V
Type: Drive IC
is_customized: Yes
semi_Choice: yes
DC 12V 8 Ch RS485 Relay Board Modbus RTU UART Remote Control Switch DIN35 Rail Box for PLC Automation control
(Specific according to the version and quantity you choose)
2: Standby current (all relays closed) 12MA, 1 relay open 40MA, 2 relays open 68MA, 3 relays open 94MA,4 relays open 122MA,5 relays open 148MA,6 relays open 174MA, 7 relays open 198MA,8 relays open 224MA
3: ''open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
4: Two instruction-control mode : MODBUS RTU command and AT command
5: Under the ''Delay'' command ,the maximum delay is 255 seconds;
Under the AT command ,the maximum delay is 9999 seconds
6 MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter; AT commands can be made serial HyperTerminal (serial assistant) Enter;
7 Under the MODBUS command mode, it can support up to 64 devices in parallel
8 The default baud rate is 9600BPS. The baud rate can be selected through jumpers: 2400 4800 9600 19200BPS
9 Size: 100 * 72 * 20mm(Only PCB Board);120 * 88* 42mm(with Din Rail Box)
10 Weight: 120g(Only PCB Board);198g(with Din Rail Box)
11 Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC
For more information, please open the link and download:
https://1drv.ms/u/s!AjrAGEbCBLls2AtnIBgCqTG4gUvd?e=mNnb35
DIN rail Box parameters:
Product model: UM72
Color: green
Width: suitable for PCB board width UM72(72mm PCB)
Insulation grade: flame-retardant VO grade
Backplane length: suitable for 100 mm PCB boards
Net weight: 72g
Installation: DIN35 and C45 rail
Application
Automatic curtain control
Automatic door control
Typical applications:

1 When controlling a module, you can use the MODUBS RTU instruction or the AT instruction. In AT command mode, the dial switch (slave address) is invalid and can only control one module at a time.

MODBUS RTU command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control
Wiring Diagram:
1 DC 12V control circuit,Wiring diagram below. ''LOAD'' may be camera,LED lights, fans, motors and other DC 12V equipment
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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