5V 2-Channel Relay Module USB Smart Switch Controller Expansion Board UK Stock
Smart Switch Relay 5V Relay Module Switch Military-grade. 1 Relay Module. Onboard square USB interface, stable connection. Relay size: approx. 6.2 4 1.5 cm/ 2.44 1.57 0.59 in. Adopt for HID technology, no need for any driver, plug and play.