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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

Description
Specification
5PCS OPA404KP DIP 14
USD 3.26USD 3.36
5PCS UPC1316C UPC1316 DIP-14
USD 0.91USD 0.94
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