Gravity: 16A Relay Module For Arduino wiki- DFRobot
![Gravity: 16A Relay Module For Arduino wiki- DFRobot](https://raw.githubusercontent.com/DFRobot/DFRobotMediaWikiImage/master/Image/DSC0218.jpg)
wiki:A relay is an electrically operated switch, which has a control system and the controlled system, usually used in automatic control circuit.
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Gravity: Magnetic Latching Relay Module for ESP32 / Arduino - DFRobot
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Gravity: Digital 5A Relay Module for Arduino - DFRobot
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Gravity: 16A Relay Module For Arduino wiki- DFRobot
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Gravity: Digital 10A Relay Module (Arduino and Raspberry Pi Compatible) (DFR0473)
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Gravity: Heart Rate Monitor Sensor For Arduino , from DFRobot for €15.11