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.
Adapter Module. This suite adopts simulation light circuit made with NE555 and CD4017,the blue LED and red LED flashed. circulatory,so as to like the alarm lamp.Change the RP1 size can change the oscillation period, thus changing.
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.