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Electroslab

The Knock Sensor Module KY-031

The Knock Sensor Module KY-031

Regular price $1.33 USD
Regular price Sale price $1.33 USD
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The knock sensor, detects the knocks and the taps. It can work like a switch. The sensor output normally stays at High logic. The spring inside this sensor vibrates when knock or tap is detected and sends pulse or multiple high low pulses.

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