2 in 1 DC 5V 12V 24V 8ch USB Serial Port Relay Module UART RS232 TTL Switch Board CH340 for Smart home / Wireless Instrument
USD 0.50USD 0.76
2 in 1 DC 5V 12V 24V 8ch USB Serial Port Relay Module UART RS232 TTL Switch Board CH340 for Smart home / Wireless Instrument