8Channel RS232 TTL232 IO Control Switch Board Com DB9 Serial Port for Momentary Self-locking Interlock Latch Delay Relay Module – 5V

Description

Descriptions:  Operating Voltage : DC 5V(5V Version) / DC 6-24V(12V Version)Operating Current : 10-15MATwo serial ports: RS232 DB9 interface, TTL 232 interface8 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 CommandsTwo 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 PLCRelay ModuleSmart 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