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2: stop trigger, the sensor can sense all sound, the output relay, the relay will be the sound of Kaka, will trigger module solutions: (1) away from the sensor relays (sensor wear 20cm line for longer self lengthened); (2) the sensitivity down a little, the sound of the relay can be filtered out.
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.