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4 signal relay board, 4 wide voltage input, Multi-protocol card with no connectors, to allow for you..
£101.93
4 signal relay board, 4 wide voltage input, Multi-protocol card with 2 part horizontal connectors.Ge..
£108.51
Features red & yellow LEDs to indicate transmission & reception of data, 0V & power disc..
£62.83
4 signal relay board, 4 wide voltage inputs. 24 Volt operating relays. Two part horizontal con..
£104.02
This low cost, general
purpose, USB powered board has four opto-isolated relays and four general ..
£52.00
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