1. Decibels: 90db (adjustable with a Phillips screwdriver) 2. Screw mounting hole spacing: 12mm, hole size: 6mm 3. Power supply: DC6-30V/1A 4. Current: 1A (MAX) 5. Operating temperature: -20~70 degrees Celsius 6. Output power: 2W/8 ohms 7. File format: MP3 8. Dimensions: 71x62x27mm 9. Default cable length: 300mm 10. Suitable for shops, supermarkets, and convenience stores; language can be customized. 11. Simple voice change: simply unscrew the casing to expose the speaker and chip. 12. One speaker can connect to four switches simultaneously; the sound will automatically play whenever a switch is closed. 13. Explanation of changing the audio order: The audio is changed sequentially when triggering multiple audio streams. For example, the first audio file is the first audio stream, the third audio file is the third audio stream. To change any audio stream, simply replace the audio streams in the correct order!
