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Stack design can be directly plugged into the Arduino, easier to use! Onboard buzzer (D4), you can set the backup alarm tone. DC motor drive current up to 2 A, motor output uses eight high-speed Schottky diodes as protection.
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.