This device is a lot like the KY-002 Vibration Sensor in that it registers a jolt or a shock. About the only difference is that my testing showed it to be a less sensitive. In other words, it takes a more powerful knock or jolt to register an impact. The device itself is nothing more than a switch with a pull-up resistor.
General | Brand: KEYES Type: KY-031 KEYES Knock Sensor Module Mainly Compatible with: Ardunio |
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Weight and Size | Product weight: 0.004 kg Package weight: 0.010 kg Package Size(L x W x H): 10.50 x 7.70 x 0.50 cm / 4.13 x 3.03 x 0.20 inches |
Package Contents | Package Contents: 1 x KY-031 KEYES Knock Sensor Module, 1 x Dupont Line |
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