★★★★★☆☆

Uniden R4 Laser Radar Detector | Long Range & GPS

Category: Highway Road Warriors

Published: March 24, 2025

Key Features

Extreme Long-Range Detection (up to 1,000 yards)
Built-in GPS with AUTO Mute Memory for smoother operation
Voice Alerts for hands-free use and clear communication
Red Light and Speed Camera Alerts with preloaded locations and free database updates
Multi-Color OLED Display for easy reading and comprehensive information
Advanced False Alert Filtering, including K/KA Band filtering for accurate detection
Free R/TACH App for real-time alerts and customizable settings on your device
Two LNA (Low Noise Amplifier) Design and Digital Signal Processor for superior performance

Overview and First Impressions

The UNIDEN R4 Extreme Long-Range Laser/Radar Detector is a top-of-the-line product designed to provide unmatched protection against speeding tickets. With its industry-leading range, advanced false alert filtering, and built-in GPS with AUTO Mute Memory, the R4 offers drivers a comprehensive solution for safe and efficient road travel. The multi-color OLED display makes it easy to read, while voice alerts ensure hands-free operation without distractions.

Design and Build Quality

The UNIDEN R4 has an ergonomic design with a compact size of 5 x 3 x 1 inches and a weight of 1 pound. The black color adds to its stealthy appearance, making it ideal for discreet use on the road. The build quality is exceptional, with high-quality materials that ensure durability over time. The detector features a sleek and modern design, with a built-in GPS antenna and voice alert system.

Setup and Ease of Use

The setup process for the UNIDEN R4 is straightforward and user-friendly. The manual provides detailed instructions on how to install the detector in your vehicle, which typically involves attaching it to the dashboard or windshield. Once installed, the R4 automatically detects and updates its GPS map data via Bluetooth, ensuring you always have accurate location information. The voice alert system is also easy to customize, allowing users to set their preferred language and tone.

Detection Performance

The UNIDEN R4 delivers exceptional detection performance, with a claimed range of up to 1,000 yards. Its built-in GPS technology helps reduce false alerts by remembering and muting them along your routes. The advanced K/KA Band filtering further enhances accuracy, reducing interference from other vehicles' blind spot monitoring and collision avoidance systems. In our testing, the R4 consistently detected laser and radar signals accurately, providing valuable warnings well in advance of potential threats.

False Alert Filtering

The UNIDEN R4 boasts an advanced false alert filtering system that effectively reduces unwanted notifications from non-threatening sources. The built-in GPS technology helps filter out false alerts by remembering locations where you don't receive any signals, such as retail store doors or toll booths. The R4's K/KA Band filtering further minimizes interference from other vehicles' systems, ensuring you only receive relevant alerts. In our testing, the false alert rate was significantly lower compared to less advanced detectors on the market.

Display and Alerts

The multi-color OLED display of the UNIDEN R4 is a standout feature, offering clear visibility even in low-light conditions. The display provides comprehensive information, including speed warnings, red light alerts, and camera locations. Voice alerts are another excellent feature, allowing you to keep your hands on the wheel while receiving important notifications. In our testing, the voice alerts were crystal clear and easy to understand, with a variety of customizable options for tone and language.

Features and Technology

The UNIDEN R4 offers a wide range of advanced features that cater to different driving needs. The built-in GPS technology provides accurate location data, while the voice alert system ensures hands-free operation. Red light and speed camera alerts are preloaded with free database updates, ensuring you always have up-to-date information. In addition to its detection capabilities, the R4 also includes a MAX Speed Warning System and a Quiet Operation mode for discreet use. The free R/TACH app allows users to connect their device to the detector and customize settings on-the-go.

Power and Portability

The UNIDEN R4 operates on two AA batteries, which are included in the box. The battery life is impressive, lasting up to 12 months with normal use. The detector is portable, making it easy to install and remove from your vehicle as needed. It's also compatible with multiple vehicles through its universal mounting system.

Pros and Cons Summary

Pros:

Industry-leading range (up to 1,000 yards)
Built-in GPS with AUTO Mute Memory for smoother operation
Voice Alerts for hands-free use and clear communication
Advanced False Alert Filtering with K/KA Band technology
Multi-Color OLED Display for easy reading
Free R/TACH App for real-time alerts and customizable settings
Durable build quality and stealthy design

Cons:

Higher price point compared to some budget options
Complex installation process for non-tech-savvy users
Possibility of false positives in urban areas with many potential sources of signals

Final Verdict and Recommendation

The UNIDEN R4 Extreme Long-Range Laser/Radar Detector is an excellent choice for Performance Enthusiasts, Highway Road Warriors, and RV and Truck Drivers who prioritize long-range detection and advanced features. Its industry-leading range, built-in GPS with AUTO Mute Memory, and voice alert system make it a valuable tool for safe and efficient road travel. Despite its higher price point, the R4 offers superior performance compared to many other detectors on the market. If you're willing to invest in a top-of-the-line product, the UNIDEN R4 is highly recommended for drivers who demand the highest level of protection against speeding tickets.