1. Power Source: 12V DC(8*UM-3) 2. Max Output: 120± 3dB/1M 3. Current Consumption: 1A MAX 4. Service Lifetime of Siren: 8h (Until 100dB/1M Output) 5. Three Tone: 1. SIREN 2. TALK 3. WHISTLE 6. Material: ABS Plastic 7. Color: Red 8. Size: 225*225*355 mm 9. Net Weight(Without Battery): 900g