5V 4 Channel Relay Shield Expansion Board For Arduino
Compatible with Arduino UNO, Makerduino UNO and other boards with the similar structure and function.
Standardized shape design.
5VDC control voltage.
4 high quality mechanical relays.
High quality screw terminal.
Provides NO/NC interfaces.
User Guide (with examples): Click to open
1 x Relay Shield Expansion Board
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