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

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