| Model | Speaker YH-180 |
| Power | 20W for each |
| protection: | waterproof |
| certificate: | ISO9001 |
| working way: | alarm warning |
| controller | by motorcycle handlebar switch |
| Installation | bolt mounting |
| Warranty | 1 year |
| Dimension | 188MM*140 mm |
| Material | ABS, iron, etc. |
40W load speaker /auto speaker /motorcycle police siren horn speaker YH-180
AVISADORES ACÚSTICOS MARCHA ATRÁS, Sirenas de emergencia ,Sirenas compactas 
The back looks like this :
We are always pay attention to our quality , any questions just let us know.
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