Best Radar Detector Under $100 to Buy in 2021: Top Picks

Perhaps, you have a bit of a heavy foot when it comes to driving on the freeway. Perhaps, you like to test the limits of your sports car. The bad thing is, if you go even a little over the speed limit, there is always a chance of getting a ticket. In the areas where it is not illegal, you can use a radar detector to see if law enforcement is monitoring you with a radar gun.

However, in the areas where it is illegal to use a radar detector, you may get fined for using such a device. For those drivers who live in an area where it is legal, we have taken a look at some of the best radar detectors available.

Best Radar Detector Under $100 Reviews

Uniden DFR3 Radar and Laser Detector

Uniden DFR3 Long Range Laser/Radar Detector with 360 Degree Protection, 3 Modes, Highway/City/City 1 Modes, Easy to Read ICON Display with Numeric Signal Strength Counter

$89.99  in stock
as of September 15, 2021 11:58 am


  • Long range laser Radar detection
  • X, back, and ka band alarms
  • Pop and laser alert alarms
  • Highway/City/City 1 modes
  • Easy to read Icon display

This is a radar and laser detecting device that will give you extra long-distance radar and laser law enforcement device detection. It also uses a very advanced and enhanced K-band filtering technology for quick and easy signal detection. This device will keep you safe from detection so you can reduce your speed in plenty of time.


The DFR3 radar and laser detection device comes with a very easily readable display panel that gives you clear readouts. Easily audible voice alerts are also part of the early warning system that comes with this radar and laser detecting device. It has a nice, quick response time to alert you to reduce speed before law enforcement devices detect your speed.

This radar and laser detecting device comes with a very long-range detection system to warn you very early of any monitoring. The Uniden radar detecting device will help to cancel out unnecessary signals. This advanced band filtering technology will prevent too many false signal alerts. It is also very nicely designed for optimal performance with some great money-saving features.

This radar and laser detector will give you quick response time to keep you from reacting too slowly if being monitored. This will save you lots of money on fines by giving you ample time to respond when law enforcement device monitors are detected. It is easy to use and easy to set up and comes with everything included to get you going.

The power source for this device is easily accessible. It comes with a power cable to connect to the car’s cigarette lighter. This will keep you going without the worry of your device running out of much-needed power. Thus, it will not let you down in an emergency. This radar detector may be a bit pricey, but it will save you money in the long run.


  • Very easy to use and set up
  • A direct wire kit can be purchased for it
  • Will alert you to frequency type detected
  • Voice alert detection


  • A high price tag
  • Has a slightly slow response time

Cobra RAD 350 Radar Detector

$79.95 in stock
Shareasale Cobra Electronics
Last update was on: June 18, 2021 10:46 am

Cobra RAD 350

This is a reliable radar detector that will give you true signal detection with much fewer false readings to throw you off. It is much more expensive than the average radar detector in this review, though. However, it also comes with a handful of extra features for your convenience and peace of mind.


This radar detector has a very high-quality display panel. This panel will deflect easily readable readouts for your convenience and for very accurate information. The RAD 350 is an easily installed radar and laser detector. It is very easy to operate and gives a great and fast response on the display. With the instant on-and-ready feature, you don’t need to wait for your radar detector to start up before you can use it.

The Cobra radar and laser detector can be used to detect laser signals from the front, as well as from the rear. This helps to keep you covered from every direction. The voice announcements will help keep you safe, too. You will be able to keep your eyes on the road while it is doing what it should. This radar and laser detector gives you 360-degree coverage for all-around protection monitoring of incoming signals.

This radar detecting device is very easy to set up in your car with an easily mountable suction mount for the windshield. It will give you audible signals, as well. That way, you can keep your eyes on the road while the audio signals tell you what type of signal was detected. The IVT filter system will lessen the chance of false signals by ruling out other signals that may cause false alarms.

This device gets its power source from the cigarette lighter. This means the power stays on for you, so your radar detector won’t die or run out of power. This radar and laser detector device will detect all the radar signals. Of course, this includes the laser signals that are used by law enforcement devices. This quick, responsive detection device from Cobra will certainly keep you on the alert from law enforcement detection.

Read full review of Cobra RAD 350 Radar Detector here.


  • Easy to use and setup
  • Great quality and durable
  • Will detect photo radar
  • Quick response time


  • Has no voice alert
  • Very high price

Uniden DFR1

Uniden DFR1 Long Range Laser and Radar Detection, 360° Protection, City and Highway Modes, Easy-to-Read Color Icon Display with Signal Strength Meter Bars,Black

$53.57  in stock
28 new from $52.95
Free shipping
as of September 15, 2021 11:58 am


  • LONG RANGE SENSITIVITY - Wide Band Protection from Radar and Laser Guns with False Alert Filtering technology.
  • FRONT & REAR DETECTION – Uniden's Eagle Eye Laser Detection Technology provides you all-around 360° Protection.
  • HIGHWAY/CITY/CITY 1 - Three modes for driving in Urban and Rural environments, with Audible & Visual Signal Strength Alerts, and Volume control.
  • MEMORY FEATURE - Conveniently saves your last settings (except Mute) when the unit is powered down or disconnected from power.
  • INVISIBLE - The DFR1 is invisible to VG-2 and Spectre I/IV/IV+ radar detectors.

The Uniden radar detector is a great long-range detector at quite an affordable price. Also, it might save you a lot of money on fines. This is just the device for those people who can’t help but have a heavy foot on the accelerator. This will help prevent you from getting a ticket when you least expect it.


The easy-to-read display will provide you with all the necessary information that you need to keep your bank account intact. This radar and laser detector from Uniden is very easy to use and can be set up easily. Everything you will need to set up and operate this device is included in the package when you purchase it. This is an easy device to use for those times when you need to speed up a bit.

The Uniden radar and laser detector has a long-range detection of about a mile. It also provides you with 360-degree detection. This device will warn you quite a distance in advance and will even show you the signal strength that it picks up. You can be a little more at ease when you have this radar detector. It will prevent the nasty surprise of being pulled over and wasting your precious time.

Uniden’s long-range radar detector allows for easy installation with a dashboard mount or suction to the windshield. This device can be used by even the most technically un-savvy person to protect them from the laser gun monitoring of the law. Even if you can not turn off the X-band frequencies used by older law enforcement devices, it will still protect you. In fact, it will detect both newer and older bands.

This device is powered from the cigarette lighter, so you will always have power connected to it for improved protection. A good feature of this detector is that the specter used by this device is not detectable by law enforcement detectors. This will protect you even in areas where it is not legal to use radar detectors.


  • Easy to read display
  • Has a long-range detector
  • Windshield mount included
  • Powered from the cigarette lighter plug


  • X-band frequency can not turn off
  • No USB support


We want to help keep you from paying too much money on fines or tickets. If you are a speedster and can not resist the temptation to put a heavy foot on the accelerator, a radar detector is just the right device for you. It will detect that police laser gun pointing at your vehicle to monitor how fast you are going. Keep more money in your pocket with one of these radar and laser detecting devices.

Avoid Radar
Compare items
  • Total (0)