Application
  
Automated industry PLC

Relay Module

Smart Home,Home Automation ;

Identification system;

Motor FW & BW;

CCTV Camera PTZ Control;
 
Security system;

LED dot matrix screen;

RS232 remote control;
 
 
 
Product Name: 12V 24V 8ch RS232 IO Control Switch Relay PLC expansion board DB9 Serial port PC Com
 
   
Package inlcuded:
 1 x 12V 8 Channel Multifunction RS232 TTL232 Control Board for 1-8 CH Relay Module
 
 
Description: 
 
1: Operating Voltage : DC 6-24V(12V Version)

2: Operating Current : 10-15MA

3: Two serial ports: RS232 DB9 interface, TTL 232 interface

4: 8 Output control pins, 5V TTL level, low level (default) / high level output

5: "Open" "Close" "Momentary" "Self-locking" "Interlock" "Delay"(Only AT command)  "All Relays Open" "All Relays Close" 8 Commands

6 Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized, no need to switch.

7 Under the "Delay" command ,the maximum delay is 9999 seconds(Only AT command)

8 Size: 54 * 31 * 17mm

9 Weight: 16 g
 
 
 
Instruction manual Please ask us after the purchase
 
 
 


Output level: M1 disconnect (default) is low-level trigger, M1 connectis is high-level trigger
 
Glossary:
Open       : Control port output low level (default)

Close       : Control port output high level (default)

Momentary  : Input command, Port output low level, return to high level after 1 second;

 Self-locking : Input command, port output low level, input command again, port output high level, and so on;

Latched     : Enter the Channel 1 Latched command, port 1 output low level, port 2-8 output high level. Enter the Channel 2 Latched command , port 2 output low level, port 1/3-8 output high level

Delay     : Enter the Delay command, port output low level, delay of 0-9999 seconds(
only AT command )after, port output high level;
 
During the delay, Eter the Close command, immediately return to high level

   

It can control 1-8 channels 5V/6V/9V/12V/24V Relay Module


With RS232 DB9 interface and TTL 232 interface

Version identification: 
The 6-24V version comes with a 78M05 chip, and the back of the PCB board is labeled 12/24V.                
The 5V version does not have a 78M05 chip, and the back of the PCB board is labeled as 5V.