12V 2 in 1 RS232 TTL232 PC COM DB9 Serial UART PLC Delay Relay AT 8-Byte Command
ab 5,32 €
3 Two serial ports: RS232 DB9 interface, TTL 232 interface. Toggle : Enter the Toggle command, the Rreceiver Relay is Open, Enter the Toggle command again, Relay is Close;. 5 Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized, no need to switch.
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