1. Decibels: clear sound 90dB
2. Volume adjustment with a Phillips screwdriver: clockwise to increase, counterclockwise to decrease
3. Distance between two holes: 64mm
4. Screws required: M3
5. Power: 2W (12V power supply, 8-ohm load)
6. Control method: power-on sound/power-on lzoop sound/Four-channel trigger/RS485 control
7. Voltage: DC6-30V / AC220V
8. File format: MP3 format (bitrate ≤192Kbps)
9. Memory: 4M (MP3 format, 16K sampling, 32kbps, can store 16 minutes of audio)
10. Trigger cable length: 22cm
11. Power cable length: 31cm
12. Weight: 56g
13. Dimensions: 72x20 mm