Review on Heavy-Duty Waterproof Backup Warning Alarm With Super Loud Beeper Tone For Trucks, Vans, Freight Cars, Lorries, And Heavy Vehicles - GAMPRO 12V-80V 107DB (6FD) by Shakim Yates

I installed this on my vehicle a month ago.I felt the need for a back-up horn due to limited visibility around my 15-passenger van.The installation was easy, hooking into the reverse-light wire. I checked on YouTube for tips.It is quite loud, so fits the bill when reversing in congested areas.It appears to be well-made; hopefully it will still be in good shape after the Oregon winter.