1 STCK. DC 7V-24V Soundsensor/Lichtsteuerung Verzögerung Ausschalten Schalter Relaismodul
5,72 €
Gradually adjust the sensitivity until you need. 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.
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