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Trigger Signal Source: High Level Trigger (DC 3.0V-24V) signal ground is not in common with the system ground to improve the anti-jamming ability of the system (also can be short access to common ground).
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.