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 (peak), 4-8Ω. Audio output: 3.5mm dual-channel headphone socket (for connecting speakers or external amplifiers) Working mode: single song without loop, single song loop, long press 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 (peak 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 press 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 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 name it "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,