The HT571 is a simple Single Relay Board which allowed to switch other electrical devices on and off. When 0VDC signal was applied to the input of the board, the relay coils will be energized to turn the devices on and off.
This relay board used a SPDT relay with Normally Open and Normally Closed contact. The board includes a back-emf protection diode across the relay coil.
Test & Adjustment
Last Updated @ 11/17/2015 2:44:48 PM
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Normally will use POSLaju National Courier service to deliver the products.
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Normally it take 2-3 working days. Will take longer time if post to East Malaysia.
The picture is only for reference.
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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