1-10 STCK. 12 V USB Relais 8 Kanal programmierbare Computersteuerung für Smart Home
ab 10,74 €
3 Use the special relay driver chip ULN2803, relay work more stable. After connecting the power, even if the computer off or unplug the USB from the computer, the relay can also remains set. 4 Using genuine Songle relay.
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