Specifications:

Complete  initial  connection  can  be  made  before panel  power  up.  It’s  put  in  STANDBY  mode  only when the + or -SSP command is given.
The  siren  is  activated  when  the  alarm  panel’s voltage drops below 9.5 VDC.
High Bright LED Flash.
Protection  of  the  siren  from  short  circuit  in  the Flash.
Protection   switch   TAMPER   from   opening   the cover or removing the siren from the wall.
Maximum alarm duration when the SSP is off.
UV  protected,  self  extinguishing  Polycarbonate plastic box.
Available in white  and silver color.
Flash in red, orange and blue color.

Outdoor, Tampering Protected & Battery Back-up Sirens for Intrusion Systems.