YJB series products integrate speaker and amplier, it can warn by connecting power directly without host.

 YJB SPEAKER SERIES(loudspeaker,megaphone)

Model: YJB- 25  Power: 25W  Impendance:4Ω

Frequency Range:550-5000Hz   Distortion:≤5%   SPL:110dB-115dB(A) 

Weight:0.37 kg     Measure:160*90*90*mm

YJB SPEAKER SERIES(loudspeaker,megaphone)