Original
By certification 
No need power supply
Durable ABS plastic housing
Very light weight
Powerful warning sound
Shutter mechanism to provide a choice of signals
Women and children can operate it very easily
| Sound Rating: |
| 110±2dB(A) @1M |
| Output Frequency: |
| 550±20Hz |
| Single Tone |
| Net Weight: |
| 0.6Kg |
| Carton Size: |
| 15.5x15.5x16CM |
http://www.lkrescue.com/
