2 in 1 DC 12V PC COM DB9 RS232 Serial Port Delay Relay UART Switch PLC Module
8,97 €
1 pcs 1 channelDC 12V DB9 RS232&TTL232 Relay Board. 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;.
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