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US$4.19

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Wemos® 5V 4CH 4 Channel Relay Shield Extended Relay Module For Arduino

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                  Description:
                   
                  Standard and shape Arduino Shield interfaces
                  continue to stack other Arduino expansion boards
                  3 M3 screw positioning holes for easy installation
                  High units (5V or 3.3V) closing of the normally open contact
                  Onboard indicator (red)
                  Blue color
                  materials: CCL
                  dimensions: 7.6 x 1.3 x 0.5 cm
                  Relay Shield (ie 5V Quad less module) is a small current power signal control equipment commonly used electronic module, which allows single-chip high-power control devices are widely used in the SCM system to make project smart home; and the use of various types of motherboards can be inserted directly into the Arduino, eliminating patch cable problems.
                   
                  Special Note: 
                   
                  When using the Arduino UNO board connected to it, perches the UNO USB interface is extremely high, should avoid green terminals are shorting its shell.
                   
                  Package Included:
                   
                  1 x Four-channel Relay Shield
                   

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