12-48 use speaking reversing alarm in Korean 

General Specifications:

1. Output level: may vary, depends on sound files used

2. Voltage: 12-24 VDC

3. MAX. current drain: 0.6A

4. Temperature range: -40-85℃

5. Frequency: 500-7kHz±10%

6. Duty cycle: may vary, depends on sound files used

7. Weight: 375g

8. Materials: 30% glass filled nylon

9. Size:105.0*60.5*70.0mm

10：Connection: 5 core cable without connector  + USB female connector

Note: mp3 files recommended, should be named as LEFT, RIGHT, BACK to be triggered correctly. test before use

P/Ns of B80 S series back-up alarm:

*Wiring/connections optional:

Mechanical drawing (mm)：