The HT574 is a simple Two Channel Relay Board which can be used with 5VDC microcontroller such as Arduino to switch other electrical devices on and off such as Solenoid Valve, Motor, Light, etc... When 5VDC signal was applied to the input of the boards, the relay coils will be energized to turn the devices on and off.
Test & Adjustment
Last Updated @ 11/17/2015 2:48:18 PM
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Kit Set/ Hobby Kit may have slightly different to the picture due to the components used. However it will not effect the function of the product.
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