BACK UP ALARM 12 OR 24V 82DB FIXED 72625Part No. 72625 Type REVERSE ALARM Brand NARVA Unit of Measure EACH Description Back Up Alarm 12 or 24V 82Db Fixed Warranty Five Years Voltage 12 or 24 Db Range 82 Weight . 18kg Sound Volume Fixed Sound Type Squawk Tone (White Noise) Features Produced using multiple frequencies,broadband sound has the ability to cutthrough background noise making iteasier to locate. Broadband sound is also moredirectional and reduces noisepollution outside the danger