1. Input voltage: DC 5V - 35V
2. Input method: 5.1 Bluetooth audio decoding, USB computer sound card decoding
3. Bluetooth version: 5.1
4. Bluetooth name: LQSC_BT
5. Output method: 3.5MM stereo headphone jack, XH 2.54-3P stand-alone socket
6. Signal-to-noise ratio: -95DB
7. Distortion THD: 0.05%
8. Operating temperature: -40℃ to 85℃
9. LED indicator explanation:
- Fast flashing: waiting for connection
- Slow flashing: audio playing
- Constantly on: connected
10. Size: about 5.5 x 3.2 x 1.2cm
11. Shipping list: bluetooth audio decoding board x 1, 2.54mm 3P audio shielding cable x 1, 2.54mm 3P socket terminal x 1

Characteristics:
1. Full patching process
2. Wide range of operating voltage
3. Protection against reverse power connection
4. Dual audio output terminals
5. Can be externally connected with antenna (suitable for installation inside a metal box)