PIR SENSOR MP3 PLAYER WITH MICRO SD SLOT
Categories : MaxxTronic : MXA Series Functional Modules ,  Voice Recorder and Accessory , 
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The MP3 sounds using a memory card is a circuit connected to motion detection sensors. The operation starts when the sensor detects the movement of living things. It then triggers the circuit to send a signal to play sound messages. This is commonly used to display welcoming messages, various alerts, and more.
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