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This product is a 1-channel relay module board, which is 5V active low. The 1 channel 5V Relay Module is level triggered, and suitable for IO port output. Step up module. Adapter Module. Step down module.
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.