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| KY-002 Vibration switch module |  |
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| KY-002 is a ball type tilt sensor. This sensor just switches on/off. It is a make-contact sensor. Some rudimentary software available. |
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| KY-020 Tilt switch module |  |
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| KY-020 is a ball type tilt sensor. |
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| KY-031 Shock Sensor Module |  |
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| KY-031 is a knock sensor module and a digital interface, built-in LED build a simple circuit to produce percussion flasher. |
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