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8Channel RS232 TTL232 IO Control Switch Board Com DB9 Serial Port for Momentary Self-locking Interlock Latch Delay Relay Module

8Channel RS232 TTL232 IO Control Switch Board Com DB9 Serial Port for Momentary Self-locking Interlock Latch Delay Relay Module

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Descriptions: 
 
Operating Voltage : DC 5V(5V Version) / DC 6-24V(12V Version)
Operating Current : 10-15MA
Two serial ports: RS232 DB9 interface, TTL 232 interface
8 Output control pins, 5V TTL level, low level (default) / high level output
''Open'' ''Close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay''(Only AT command)  ''All Relays Open'' ''All Relays Close'' 8 Commands
Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized, no need to switch.
Under the ''Delay'' command ,the maximum delay is 9999 seconds(Only AT command)
Size: 54 x 31 x17mm 
 
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.
 
Package Incldued:
 
1 x 8Channel RS232 TTL232 IO Control Switch Relay Board