Automotive Siren System Siren Tones Low-Frequency Sound Level 10 dB Overall Height 1 5/16 in Overall Width 5 11/16 in Overall Depth 6 5/16 in Features Low-Frequency Tones Work Simultaneously with Primary Siren Includes Cradles Hardware Kit Housing Bands Siren Amp Input Voltage 9/15V DC Maximum Frequency 400 Hz Maximum Operating Temperature 149 Degrees F Minimum Frequency 182 Hz Minimum Operating Temperature -22 Degrees F Number of Channels 1 Operating Current 12 A