Security Siren/Strobe (490-0478) Specifications Faxback Doc. # 15885 Light Operating Voltage:.............................10-16V DC (12 Volts Nominal) Operating Current:.....................................600 mA max. at 12VDC Operating Temperature:...........................14 degrees - 131 degrees F (-10 degrees - 55 degrees C) Output Frequency:.............................2.4 kHz-3.7 kHz (+/- 0.3 kHz) Output Level (at 1 Foot):........................115 dB, +/- 5 dB at 12 VDC Continuous Operation:..............................Over 4 hours at 13.2 VDC Strobe Luminous Flux:............................................Over 24 1m Bulbs:.................................................E10 Type 3.7V 300 mA (ALL-07/13/95)