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The small module, forms a powerful unit ideal for IOT based projects. The unit allows for the output of up to 4 level signals suitable for triggering other devices, such as relays. Furthermore, it also alows the connection of 4 3.3V level inputs.
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.