DC 5V Dual Channel Bluetooth Relais Modul Smart Home APP Fernbedienung Schalter
5,99 €
The 5V dual circuit Bluetooth relay module consists of 2 5V//10A relay modules and a SPP-C Bluetooth serial slave module. Prepare a USB to TT serial module, TTL module GND, TX, RX respectively relay module GND, TX, RX.
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