Not Keystone specific, but I'm looking for a backup alarm to put on my truck. Haven't found any reliable rankings/ratings, but the Brigade Electronics White Sound Backup Alarm looks intriguing, although at $129 at Camping World is considerably higher priced than most other models I see on Amazon. I don't want it to be obnoxious for everyone else in the CG, and can't decide whether I want to have the ability to switch it off when I want to be more stealthy. Does anyone out there have any wisdom to share?