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R428A01 2 In 1 RS485 RS232 TTL AT Modbus RTU Relay Switch Board PC USB COM UART Serial Port 1 CH 12V DC Module

R428A01 2 In 1 RS485 RS232 TTL AT Modbus RTU Relay Switch Board PC USB COM UART Serial Port 1 CH 12V DC Module

  • Model: R428A01
  • Availability: In stock
  • Weight: 0.022Kg
$4.99
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Product Name: 2 In 1 RS485 RS232 TTL AT Modbus RTU Relay Switch Board PC USB COM UART Serial Port 1 CH 12V DC Module
 
 
Package inlcuded:
1 x DC 12V 1Ch RS485 Modbus & AT command Relay Board
 
 
Description:
 
1: DC 12V power supply
 
2: Standby current (all relays closed) 7-8MA, 1 relay open 40MA
 
3: ''open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
 
4: Two instruction-control mode : AT command and MODBUS command
 
5: Under the AT command ,the maximum delay is 9999 seconds
Under the MODBUS command ,the maximum delay is 255 seconds
 
6 AT commands can be made serial HyperTerminal (serial assistant) Enter;
MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter;
 
7 Under the MODBUS command mode, it can support up to 247 devices in parallel
 
8 Size: 40 * 30 * 18mm ;
 
9 Weight: 17.5 g;
 
10 Maximum load: 20A 14VDC;20A/125VAC;10A/250VAC
 
Instruction manual Please ask us after the purchase
 
 
Application
Automated industry PLC
Smart Home,Home Automation ,Wiser Home;
Identification system;
Motor FW & BW
CCTV Camera PTZ Control
Security system
LED dot matrix screen

 
Typical applications:
 
1 AT command mode (M0 Connect), in this mode can be through the serial HyperTerminal (serial assistant) enter a simple AT command control relay. AT command mode time up to 9999 seconds
 
 

2 MODBUS command mode (M0 disconnect), 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

 
 
 
 

2 DC 12V motor reversing control, Wiring diagram below. ''LOAD'' can be Fans, motors, pumps and other DC 12V equipment

 
 
 
 
Test Software(We offer a demo video):
Serial HyperTerminal:
Modbus Poll
 
 
 
 

 

 

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* Delivery Time.
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