This 4-channel relay board offers the possibility to control external devices with high voltage and high current via GPIO pins.
Specifications• expansion board suitable for the Odroid M1S• 4-channel relay control via GPIO pins• GPIO isolation via PC817 photocoupler to prevent interference from high voltage• single serial RS232 port• pins for reset and power button (optional)• Dimensions (LxWxH): 90 x 65 x 28 mmFurther information: https://wiki.odroid.com/accessory/add-on_boards/relayboard