The Uniden R4Plus is an all-new platform with a much greater range of detection. It has an enhanced Auto Mute Memory feature, which automatically locks out false alert locations. The R4Plus also has the best False Alert filtering system in the market, offering fewer false alerts from blind-spot monitors and K Band sensors in other vehicles. When you need the best information possible, and none of the noise, Uniden’s R4Plus Extreme puts you miles ahead. Built-in GPS technology with auto mute memory The R4Plus can remember and automatically mute false alerts (such as retail store door alarm), along your routes so you never have to listen to the same false alert twice.
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