Extremely loud 114dB piezo sounder    
High intensity xenon flashing strobe light    
Selectable SAB mode or SCB mode    
Built-in NiCad backup battery 
Battery: Rechargable 6V, 500mAh  
Adjustable sounder cut-off timer    
Flashing comfort LEDs     
Dual tamper switch protected    
Size: 210L X 130W X 78H mm    
Operating Voltage: 6-15VDC    
Rated Voltage: 12VDC    
Rated Current: 300mA
moisture proof for PCB