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4-Ch. I2C Relay Shield DIY Kit for Arduino – stackable
This innovative relay shield uses I2C to control every single relay. Up to 8 modules stackable if more relays are required.
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8-Ch. I2C Relay Shield DIY Kit for Arduino – stackable
With 8 selectable I2C addresses, up to 8 of these modules can be stacked for a total of 64 relays.
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