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5pcs 4 Channel 5V Relay Module Relay Control Shield Relay Expansion Board For Arduino


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                  Relay Shield (ie 5V Quad Relay Module) is a small current signal control power equipment commonly used electronic module, enabling high-power single-chip control devices are widely used in SCM system to make smart home project; and can be directly plugged into the compatible the use of various types of motherboards, eliminating the patch cable troubles.

                  1. Standard For Shield interfaces and shape
                  2. Can continue to stack other For  expansion boards
                  3. 3 M3 screw positioning holes for easy installation
                  4. High Drive (5V or 3.3V) normally open contact closure
                  5. Onboard relay indicator (red)

                  Relay Shield Interface: (the last picture show)
                  Relay: sky- 5V DC relay , model HJR-4102-L-5V, which Relay1 behalf of the 1st relay , the other and so on.
                  Power Interface : 5V DC power interface
                  Indicator: four lights are red when the relay is driven high , the corresponding indicator will light up .
                  Relay Terminals: Terminal high-power , high-current high voltage can be connected to the device . The 1st foot ( i.e. NOx) is a normally open pin , NCx pin is normally closed , COMx is common, i.e., when the relay is not driven , NOx and COMx open between two pins , NCx and COMx connection ; When the relay (x) control signal pin is high drive relays , NOx and COMx connection open between NCx and COMx.
                  Package included:

                  5 x 4 Channel 5V Relay Module

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