KY-031 Knock Sensor Module

Availability: 862 items
+100 5 % $0.38
+500 5 % $0.38
+1000 8 % $0.37
+5000 10 % $0.36
+10000 13 % $0.35
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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.

working voltage: dc 3~5v
default output: high;
single channel signal output

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