K40 Makes Customers for Life

Welcome to K40 Electronics! We’re so glad you found us. We’re not the easiest radar detector and laser jammer company to find, and that is by design. We don’t sell our products through a big box or large chain stores. That’s because years ago, K40 Electronics made a commitment. We are committed to supporting and partnering with independent retailers and select car dealerships that keep Main Street and America going. We think small business is essential. More than ever, we believe that there is value in knowing who you are buying from and how much they care about your experience. Small businesses that care about you and your communities. Together, we have made huge impacts with monetary and sweat equity donations in neighborhoods across this great nation. You won’t find a more caring and responsive company than K40 Electronics and its hand-picked network of small business owners.

Let Us Earn Your Business

K40 Electronics builds its products for drivers. We have been keeping drivers ticket-free since 1981 with the industry’s first and best “Ticket-Free Guarantee.” We believe in the performance of our products. With K40 Electronics, you have a 100% Ownership Guarantee, including Ticket-Free Guarantee, Performance Guarantee, and Quality Guarantee.

We build our products to be easy to use, discreet, and customizable for real-world experiences. Check out K40 Electronics reviews to learn more from real drivers and car enthusiasts.

K40 Electronics has a history of reliability, integrity, innovation, and transparency. We earn business with great products and excellent service. Give us a call at 800-323-5608, and let us show you! Our white-glove service includes experienced consultants that are available to provide you with product advice, information, and problem resolution.

Explore our products to find the perfect police radar detector and laser protection system for your vehicle and driving lifestyle. Contact us for a K40 Electronics Consultation. One of our senior K40 Electronics experts is always available to custom configure your system for you and how you drive.

A Message from K40's President, Peggy Finley

I want to start this letter the same way we begin every day here at K40 Electronics. In Appreciation.

Appreciation for every customer who has ever purchased our products. Appreciation for our network of retail stores and car dealerships.

Many of our customers go back 30 years, with the introduction of the first machine wound, high-performance CB antenna. Some have just purchased their first custom-installed radar/laser detection system, and many have been driving with K40 protection for decades. It’s vital that you know each time you choose K40 products and protection, you are backed by a company of real people who genuinely care about your complete satisfaction.

Our network of retail stores and car dealerships are hardworking, committed professionals who have persevered within an ever-changing and often unpredictable market. Retailers who didn’t quit when faced with “Big Box” competition continue to reinvent themselves and offer white glove, personal service to their customers, thereby setting themselves apart from Internet resellers. They offer integrity and satisfaction their customer’s demand. We started with you, and we’re staying with you. We appreciate you.

I am proud of the company we are, the products we offer, and the relationships we have forged. You all matter to us. And we are blessed to have you in our lives.

Peggy Finley
President, K40 Electronics

The K40 Team

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The industry’s most experienced and knowledgeable team delivering superior customer service and satisfaction.

Our Sales and Customer Service staff tenure averages 20 years. Our experience and availability helps ensure that your K40 police radar detector and laser jammer system provides you with years of ticket-free driving. Should you ever have any questions about your K40 system, please call us 24/7 at 1.800.323.5608 and one of our highly-experienced consultants will be happy to assist you.

At K40 we don’t just sell products. We’re a company of people who love what we do. We’re an integral part of our community and have been for over 30 years. We’re committed to our #1 business goal: delivering the best radar detector and laser jammer products on the market along with complete customer trust and satisfaction. These are commitments we’ve remained dedicated to since 1981.

I couldn’t have been more impressed when I called K40 with questions. Your consultant answered every question, asked me another dozen questions about how and where I drive, and even inquired about my kids driving the car. All-in-all, it was an excellent experience and the results have been affirmed by my K40 saving me from at least three tickets already!

David L. Pittsburgh, PA

I have your product on my BMW, and love it. It allows me to drive the car the way it was made to be driven. I spend less time looking for speed traps and roof lights, and more time with my eyes on the road.

Tom W. Fresno, CA

This is my 7th K40 radar detector purchase – nice update to product and good service at Patrick BMW.

D. Schwartz Glencoe, IL

Every mile I drive in my Porsche is more enjoyable thanks to the K40 radar/laser system. I’ve been warned several times of speed traps in the first two months of it being installed.

Dom M. Automotive Journalist, New Jersey

Thank you Lynette, I didn’t realize I have had the K40 for that length of time. It’s reassuring to know I bought the best from a company that is still around. I don’t think I will need another since I am 68. It may be time for me to slow down.

Thanks again!

Doug F. Decatur, AL

The Installer’s Attention to detail was incredible on my very limited production BMW K1 Motorcycle and the product itself has vastly improved the enjoyment and quality of my ride–It is a necessary accessory to have!!!

E. Rossmann Woodstock, GA

This is the 4th K40 system I’ve purchased – always worth the money!

J.F. Steger Dubuque, IA

Just a compliment on great service. Had concealed system put in my BMW 550ix last week. Received a call within days from Brian who acknowledged receipt of my registration and asked me to call him at my convenience to go over features and operations of system which I did. Brian was most helpful and provided an outstanding customer service experience! P.S. system works great too. Thanks

Jim D IL

I came in thinking I would get another radar detector, but Bob convinced me to get the K40. The speeding ticket guarantee sold me. And I have not been disappointed!

Ken T. Ann Arbor, MI

K40 radar detectors have been a name synonymous with quality and workmanship. When a radar detector company can produce a product that has stood the test of time like K40. The choice is simple.

Linda

This is my second K40 radar detector. The first one I purchased in 2001 saved me from a ticket the very first day. I thought it was defective because it alerted me 4 miles before I saw a state patrol. This convinced me how well this product works! It has saved me countless tickets since then. Thanks for making a superior product.

Patrick Dowling

“Chat with Lynette made me select the K40 unit over others.”

Rich H. Georgia

K40 Timeline

Click each year to view a storied history of industry first achievements.

1981
- K40’s first superheterodyne radar detector hits the market. The dash-mounted unit weighs almost three pounds!
1983
- K40 offers the first manufacturer-backed Ticket-Free Guarantee: “If you get a speeding ticket, we’ll pay for it!”
- K40 introduces the industry’s first custom-installed remote radar detector. Sold exclusively through high-end automotive electronics retailers.
1984
- K40 targets the luxury car market by selling through elite dealerships and designing remote systems exclusively for BMW, Mercedes-Benz, and other luxury carmakers.
1986
- Sonarradar™ is introduced as the industry's first radar detector with separate front and rear radar receivers with microprocessor technology to deliver full 360° protection.
1988
- The Undetectable™ introduced – first totally hidden, theft-proof radar system.
1991
- Chipsradar™ combined K40’s remote radar with a VHF receiver alarm system for California drivers to detect California Highway Patrol (CHIPS) cars.
1993
- K40 Electronics introduces a "game changer" with the first ever remote mounted "Superwide" radar receivers. These revolutionary receivers picked up all bands of radar including the newest form of Superwide Ka-band radar.
1994
- K40 introduces Laser Defuser™, the first-of-its-kind defense system for new police laser guns. Hidden electronics mount in the license plate holder.
1995
- Portable Radar RD650VG-2, K40’s first all-band portable detector with laser detection.
- K40 Electronics begins selling the SS700 SWL and the SS3000 SWL, the first completely integrated Superwide radar receiving systems that include laser detection. The same stealthy interior alerts now alert to all police radar and laser targeting.
1997
- Laser DefuserPlus™ introduced – The highly-acclaimed second generation Defuser with improved performance and alert system.
2001
- A redesign of both the portable and remote systems streamlined the units and used the latest technologies to ease installation and improve alert capabilities.
2003
- RD850 Portable Radar/Laser Detector introduced – The RD850 offered improved performance and detected the latest police Ka-band radar guns.
2005
- Calibre™ Radar/Laser System – The first radar/laser system to incorporate breakthrough wireless technology, a One Touch™ remote control, and multiple alert settings.
2007
- Laser Defuser EX & EX2 introduced – This fourth generation Laser Defuser technology is smaller and offers improved laser detection. Additional dual model design for larger vehicles.
2010
- RL100 Portable Radar/Laser Detector is the first K40 protection solution to offer GPS pinpoint location recognition and Quiet Ride which allows drivers to silence all alerts below a defined speed.
- The all-new RL-Series of remote radar detection systems introduced - With the introduction of the FULLY programmable RL200 and RL360 radar systems, drivers are able to program their radar/laser protection systems to fit their vehicle and driving habits. The RL-Series is the first comprehensive protection system controlled and programmed through the visor-mounted remote control.
2012
- K40 Electronics introduces the NEW K40 Laser Defuser g5. K40's 5th generation of laser defuser, the Laser Defuser g5 emits a powerful infrared light signal back to the police laser gun at a pulse rate that it cannot understand. This enables the driver to avoid detection and, ultimately, a speeding ticket. The new Laser Defuser g5 interface module allows up to three additional laser defusing transponders that mount on separate sides of the vehicle, front or rear, for maximum coverage and performance.
- After a full year of dealer and consumer feedback on the very popular RL-Series of installed radar detectors with GPS technology, K40 releases the RL360i and the RL200i. The remote control was redesigned and new features were added. The LEDs are now dimmable, there are 5 volume settings, and, when incorporating the Laser Defuser g5, the Laser Defuser has 3 levels of functionality.
2014
- Peggy Finley, President and Owner of K40 Electronics, was honored with her own day by the town of West Dundee, IL. West Dundee Village President Christopher Nelson proclaimed April 2, 2014 as “Peggy Finley Day,” Peggy Finley has been an active supporter of the community and of the Boys & Girls Club of Dundee Township, where she is a member of the board. She has donated over $350,000 to improve the lives of School District 300 students and their families. Peggy Finley has personally worked to better the lives of students and residents by volunteering to renovate the Boys & Girls Club’s teen center and administrative offices, as well as purchasing a new 15-passenger van for field trip transportation. She has always encouraged those at K40 Electronics to volunteer whenever they can. "K40 is proud to be a small business making a difference not only for other small businesses, but also for our community,” says Peggy Finley.
2015
- K40's New RLS2
  Portable Radar and Laser Protection with GPS taken to a whole new level!
  
  K40 Introduces the all-new K40 RLS2 portable radar/laser detector with GPS. The RLS2 also features our innovative K-Band Filter. This filter helps eliminate false alerts from OEM radar-based accessories. No more K-Band alerts from adaptive cruise control or lane departure warning systems!
- Introducing the K40 RD950 Portable, All-Band Radar and Laser Detection.
  
  The K40 RD950 offers you superior protection from speeding tickets. Guaranteed.
  
  The RD950 also features our innovative K-Band Filter.
  
  This filter helps eliminate false alerts from OEM radar-based accessories. No more K-Band alerts from adaptive cruise control or lane departure warning systems!
- K40 begins shipping the 2016 model RL360i and RL200i remote radar detection systems with several added features:
  
  Mark to Mute - Silence certain radar/laser alerts when within a specific GPS location. No more falsing from automatic doors and security systems.
  
  K-Band Filter - Rejects alerts from vehicles on the road equipped with radar-based safety features, such as Adaptive Cruise Control and Blind Spot Assist.
  
  A redesigned, all-black remote control.
2016
- The K40 RL360i and RL200i Expert custom installed radar detector systems are launched. Inspired by installers, the Expert Control Unit is a permanently installed, yet easily concealable component that looks and functions just like other factory installed vehicle controls, including back-lighting for easy button identification in low light conditions.
- Utilizing a laser diode - the latest laser jamming technology - K40 evolves their police laser gun countermeasure product line by introducing the Laser Defuser Optix.
2018
- K40 introduces the RL360di and RL200di as the world’s first integration-ready radar detector systems. By integrating with the Automotive Data Solutions (ADS) iDatalink® Maestro RR interface and select Kenwood/JVC radios, the new systems address the growing trend of vehicle integration and connectivity by offering drivers a visual and touch on-screen user experience.
2020
- K40 releases all new Platinum Series custom installed radar detection systems utilizing LNA (Low Noise Amplifier) radar receivers for up to a 40% increase in range and sensitivity. More customizable features add for an even better consumer experience.
- K40 releases the Platinum100. The world's first remote controlled portable radar detector with Laser Defusers add-on capabilities.