{"id":12093,"sku":"DEV-12093","name":"Relay Shield","description":"
This Relay Shield from Evil Mad Scientist is a simple Arduino add-on that gives your Arduino the ability to control a single electromechanical relay for switching loads of up to 24VDC or 40VAC. Each Relay Shield comes equipped with a single pole - double throw (SPDT) sealed relay which can handle a current load of up to 5A. This means that when current is applied to the coil it throws a simple changeover switch, terminating the connection from the NC (Normally Closed) contact to ground and closing the NO (Normally Open) contact. Use them to switch high voltage\/high current devices. As this is a shield, it is powered straight from the 5V power supplied by your Arduino, simply slide it into your Arduino or shield-compatible board (like the RedBoard) and you will be good to go!<\/p>\n\n
The relay shield is controlled through pin Digital 4 on your Arduino via a transistor labeled \"Q1\". When output Digital 4 on your Arduino is low, the relay shield will connect the NC pin to the \"Common\" pin of the screw terminal. When output Digital 4 goes high, the \u201cCoil On?\u201d LED will light up and the relay shield will instead connect the NO pin to the \"Common\" pin of the screw terminal.<\/p>\n\n
The Relay Shield is sold as an easy-to-assemble kit and includes everything listed below with clear assembly instructions listed in the documents section.<\/p>\n\n
Includes:<\/strong><\/p>\n\n Documents:<\/strong><\/p>\n\n\n
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