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 (), 4-8Ω. Audio output: 3.5mm dual-channel headphone socket (for connecting speakers or external amplifiers) 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 Working mode: single song without loop, single song loop, long to play and release to stop. 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