6 Tone Universal Replacement Security Car Alarm Siren Super Loud 120dB 25 Watt Six Tone Tone Output Accepts +12 Volt Input for Connection with all Standard +12V Car Alarm Output Simple 2 wire hookup (+12V Output from Alarm and Chassis Ground) 3 Hole Mounting Base with Tilt Siren Size (LxHxW): 4.5" x 3.75 x 3.5"