Uniden
R4 Radar Detector
Best long-range detector for drivers seeking a quieter, smarter commute.
Experience top-tier radar detection with the Uniden R4 Factory Certified (Renewed). Engineered for superior performance, it features a powerful Blackfin® DSP for extreme long-range alerts and an OLED display for clear visual and voice feedback. Built-in GPS with Auto Learn intelligently minimizes false alerts, while Bluetooth and app support offer enhanced connectivity. This renewed unit includes all necessary accessories and a 90-day warranty, providing premium technology without unnecessary complexity for a smarter, quieter drive.
$429.99
More Uniden R Series Radar Detectors Options
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 125
#2 in Radar Detectors
Price vs Category Average
-35%
Below average
Model Number
4
/ R-R
Who it's for
- Drivers prioritizing maximum reaction time on highways
- Commuters tired of annoying false alerts in urban areas
- Road trippers needing automated speed camera and location alerts
Who should skip it
- Budget-conscious buyers seeking an affordable entry-level device
- Drivers who prefer a discreet, low-profile windshield setup
- Casual users wanting a simple plug-and-play experience
Performance breakdown
Detection Range
Blackfin DSP provides industry-leading distance for early threat identification.
False Alert Filtering
Auto Learn technology effectively silences recurring stationary interference.
Connectivity
Bluetooth integration enables seamless app updates and real-time data sharing.
Interface Clarity
High-contrast OLED display ensures critical alerts remain visible in bright sunlight.
Setup Simplicity
Intuitive menu navigation makes customizing bands and alerts straightforward.
Build Reliability
Factory certified hardware maintains premium performance standards despite renewed status.
Key Specs
Model Number
R-R4
Supported Detection Bands
K Band, Ka Band, Laser
Mounting Type
Windshield Mount
SKU
R-R4
UPC
050633600719
Warranty
90-day (Renewed Unit)
GPS Enabled
Yes
Display Type
OLED
Features
- Extreme long-range radar and laser protection
- Advanced Blackfin® DSP for superior detection
- GPS with Auto Learn for intelligent false alert muting
- Bluetooth and app support for connectivity
- Clear OLED display with voice alerts
- Speed and red-light camera alerts
- Advanced K/Ka Band Filtering
- Customizable voice alerts
What customers say
Customers overwhelmingly praise the Uniden R4 for its exceptional long-range detection, especially on the Ka band, offering superior reaction time. A key highlight is the significantly improved false alert filtering, which effectively manages modern K-band sources like blind-spot monitoring. The integrated GPS functionality for camera alerts and custom lockouts is frequently cited as a major benefit for daily driving. While initial menu configuration requires some attention, the consensus is clear: the R4 delivers professional grade performance and features at an outstanding value, making it a top choice for serious drivers seeking reliable protection.
Know before you buy
A Factory Certified or renewed unit has been inspected and tested to meet original performance standards. It includes all necessary accessories and is backed by a 90-day warranty, offering a reliable way to get premium performance at a lower price point.
The built-in GPS remembers the locations of stationary false alarms, such as automatic door openers at retail stores. Over time, the device automatically mutes these signals when you pass by, ensuring you only get alerted to genuine threats.
Yes. Because the R4 features Bluetooth connectivity and app support, you can sync the device with your smartphone to receive firmware updates and keep your red-light and speed camera database current.
The OLED display is designed for high contrast and clarity, making it easy to read even in bright daylight. It provides clear visual feedback alongside voice alerts so you can stay informed without constantly looking away from the road.
No, the R4 is designed for simple DIY installation. It comes with a windshield mount and a 12V DC car adapter, allowing you to plug it into your vehicle's power outlet and mount it to your windshield in minutes.
The Blackfin Digital Signal Processing (DSP) chip is what gives the R4 its extreme long-range capability. It processes incoming signals much faster than standard detectors, allowing it to identify and alert you to radar threats well before they are within range of your vehicle.
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