1. Power Source: 12V DC(8*UM-2) 2. Max Output: 120± 3dB/1M 3. Current Consumption: 1A MAX 4. Service Lifetime of Siren: 16h(Until 100dB/1M Output) 5. Three Tone: I. SIREN ii. TALK iii. WHISTLE 6. Material: ABS Plastic 7. Color: Availabie 8. Size: 225*225*370 mm 9. Net Weight(Without Battery): 1040g