Specifications of Product: 

1,Product Type: Dual tone Siren

2,Product Model: ES-508

3,Operating Voltage:DC 12V 

4,Rated Power: 30W,40W

5,SPL: 130 dB

6,Sound Type: 2 tone  , Dual tone,

7, Magnet: Ferrite

8,Voice Coil:33.5mm

9,Q`TY: 16PCS/CARTON

10,MEAS:59.5X42.5X49CM