MP3 voice playback module, voice announcer, alarm, prompter, 12V DC power supply version. Power supply current: more than 500MA (DC 7-12V power supply). Specifications: 80 x 63mm. Input trigger port: 8 (touch VCC terminal (5-12V) trigger). Speaker output port: 12W (), 4-8. Audio output: 3.5mm dual-channel headphone socket (for connecting speakers or external amplifiers) Working mode: single song without loop, single song loop, long to play and release to stop. 1. Support sampling rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48KHZ. 2. Fully support FAT16/FAT32 file system, support 32GTF card ( value). 3. Optional 7-12V power supply or 110-230V power supply version. 4. Adjustable volume, simple knob adjustment method. 5. Support 5-12V high level trigger. 6. Comes with 12W amplifier, can be connected to 12W internal 4-8R speakers or speakers 7. Equipped with standard 3.5 audio interface, supports speakers and amplifier connection. 8. Equipped with playback module switching: single song non-loop, single song loop. 9. Supports inching trigger, long trigger Product application: 1. Single chip computer voice broadcast application. 2. Factory, warehouse, corridor safety warning. 3. Smart car, electronic design application. 4. Electromechanical equipment, electronic application product alarm warning. 5. Advertising, automatic broadcast, timed broadcast message. 6. Equipment operation guidance voice, voice warning<br><br>If you need to play when powered on, you can connect the trigger port to VCC, and then power on can directly trigger the play. Storage format: MP3 file storage format Note: The format of MP3 stored in the memory card (TF) is as follows 1. Folder naming method: create a folder on the memory card and "01" 2. The MP3 name starts with 001-999 Inspection operation instructions: 1. Put the memory card into the file. Please pay attention to the product introduction for the file format. 2. Check the structure diagram and connect the speaker, memory card, power supply and connecting wire to the corresponding position 3. Touch the wire of A1 port to VCC port. The sound play once. A2-A8 operate in the same way Note: After power on, the indicator light flash and then light up. If it does not light up, check whether the voltage is connected correctly. The 12V version needs to distinguish between positive and negative. No sound after triggering: Check whether the speaker is good, adjust the volume, and pay special attention to the file format of the memory card. Color: As Shown Material: PCB<br><br>Package Contents: 1 set x 12V MP3 voice playback modules<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.