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 Brian Edwards

Bought this based on reviews and stopped working in less than a month. Bough it a second time and about 40 days later stopped working again. These were not even exposed to water or dust, just regular highway driving and yet quit working. Spend a little more and don't buy this piece of garbage. It seems that these are sold under different brands but most likely from the same manufacturer, in another words avoid this particular design regardless of brand.