DC 5/12/24V 8CH USB Serial Port Relais Modul UART RS232 TTL Schalttafel CH340
ab 1,52 €
3 UART serial port protocol, supports two interfaces, USB_B female interface (CH340 serial port chip), RS232 interface (TTL level). 6Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized without switching.
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