MP3 Module for PIR Motion Activated Audio Player Talking Motion Sensor Module for DIY Motion Activated Sound Player<br> <br>Features<br>1. Adopts a PIR motion sensor that can detect max. 3.5 meters distance.<br>2. When it detects a moving human body, the device automatically plays back a sound message.<br>3. Built-in 4MBytes flash memory and supports max. 32GB micro SD card as well.<br>4. Supports to store multiple audio files on the memory, and if there are multiple audio files it plays next track in order after each activation from the PIR.<br>5. Load audio files onto the flash memory through the micro USB port, which is connected with a computer.<br>6. The on-board flash memory or micro SD card works as a USB flash drive on computer.<br>7. Built-in 3 watts class D mono audio amplifier, and able to directly drive a 1-3 watts (4-8 ohms) speaker.<br>8. Adjustable 6-level volume through pressing the volume button repeatedly.<br>9. Equipped with a 3.5mm audio jack that is able to be connected with an external amplifier or active speaker.<br>10. Busy signal output available that is able to work with a relay to control other external equipment like LED light,motor, etc.<br>11. Design with low power consumption and suitable to supply power using a 3.7V rechargeable lithium battery or 3 x AA / 3 x AAA alkaline batteries.<br>12. Supports to supply power directly through the micro USB port as well using an phone charger (5V 1A power adapter).<br>13. Equipped with charging circuits and it is possible to charge the attached lithium battery through the micro USB port.<br>14. The length of the wire between the board and the PIR sensor is about 18cm.<br>15. PCB size of the main board: 40mm x 37mm<br>16. Diameter of the sensor board: 22mm<br>Technical Parameters<br>1. Working voltage: 3.7-5V DC<br>2. Working current: 200mA<br>3. Standby current: 30uA<br>4. Power Consumption: 3W<br>5. On-board flash memory size: 4MBytes<br>6. Audio format: MP3 orWAV<br>7. Distance of PIR detection: 3.5 meters<br>8. Detection angle: 120 degrees<br>Introduction of Main Parts<br>Notes<br>1. When the device is playing a sound, the Busy port outputs a signal in high level 3.3V.<br>2. When the device is powered with a phone charger (5V 1A power adapter) through the micro USB port, the ON/OFF switch is ineffective.<br>_x005F_x000D_<br>