Automotive Siren System Siren Tones Air Horn Hi-Lo Wail Whoop Yelp Sound Level Not Applicable Overall Height 1 1/2 in Overall Width 5 1/2 in Overall Depth 6 1/2 in Features Faceplate Switching or Remote Control Style Includes Universal Bracket Standards SAE Class A Input Voltage 9/15V DC Maximum Frequency 1 575 Hz Maximum Operating Temperature 149 Degrees F Minimum Frequency 725 Hz Minimum Operating Temperature -22 Degrees F Operating Current 10 A Output Voltage 60V