Manually-Adjustable Reversing Alarm 12 or 24 Dual Voltage 87 or 112 De 72620Part No. 72620 Type REVERSE ALARM Brand NARVA Unit of Measure EACH Description Narva Manually Adjustable Reversing Alarm 12 or 24 Dual Voltage 87 or 112 Decibels Warranty One Year Voltage 12 or 24 Db Range 87 107 Weight . 75kg Sound Volume Adjusting Sound Type Beep Tone Features Caution: Self adjusting alarms must detect surrounding noise to properly adjust sound output. Mount alarm at rear of vehicle facing outward, clear of obstruction that would