When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
4 channel relay,each channel independently triggered independent delay, do not interfere with each other. 1 PCS DC 5V 9V 12V 24V 4 channel multi-function delay relay board. Press "SET" button to enter "channel select" interface.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.