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K40 RL100

Portable All-Band Radar & Laser Detector with GPS


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K40 RL100

Portable All-Band Radar & Laser Detector with GPS


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Unique Features:

  • 12 Customizable Settings
    • Designed to eliminate problems caused by "one size fits all" detectors
    • Allows you to optimize your RL100 for your driving conditions and environment
  • Exclusive Quiet Ride™
    • Set a minimum speed (MPH) for detection
    • Eliminates audible alerts until vehicle exceeds selected speed
    • Ideal for long road trips
  • GPS Based "Mark to Alert"
    • Mark any point of interest, such as dangerous intersections or school zones
    • Build your own customized database of locations
    • Does not require subscription or weekly updating
  • Speed Monitor
    • Gives driver a constant audible alert when a pre-selected speed is exceeded
    • Provides visual "slow down" alert
    • Ideal for new or inexperienced drivers
    • Will override Quiet Ride™ feature
  • Programmable Alert Options
    • Eliminate alerts to specific bands or laser
    • Reduces false alarms caused by other radar-based safety accessories
    • Ideal for congested urban areas where non-police radar signals are present
  • Unique Alerts
    • Audible and visual warnings alert you to the specific radar band targeting your vehicle
    • "Geiger" audio alert accelerates as you near the threat
  • Vibrant LCD Display
    • Easy to read in daylight and at night
    • Adjust brightness to suit your environment
    • Default display shows compass direction, speed reading, and filter settings

Product Features:

  • All-Band Radar Detector
  • LCD Display is easy to read in day and night conditions
  • DIM button toggles display from bright to dim, or dim to dark
  • Audible alerts provide a verbal identification of the detected band
  • Mute function will silence audible alerts
  • 3 Convenient sensitivity modes include City, Highway, and Filter
  • Protection against POP radar and laser recognition
  • Installs on the windshield
  • Includes all necessary hardware for windshield mount

Product Specifications:

  • Receiver type: DSP Datadyne Technologies
  • Operating frequencies:
    • X band (10.500 - 10.550 GHz)
    • K band (24.050 - 24.250 GHz)
    • Ka band (33.400 - 36.000 GHz)
    • Laser (830 - 945 nanometers; 332 THz)
  • Power Requirements:
    • 11.0-16.0 Volts DC negative ground
    • 170 mA typical standby
  • Operating temperature range:(5°F to 150°F)
  • Weight: 6 oz.
  • Dimensions: 2.625"W x 4.625"L x 1.125"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Package Includes:

  1. RL100 Radar/Laser Detector
  2. 72" Coiled Cigarette Lighter Adapter
  3. 115" Cigarette Lighter Adapter
  4. Windshield Mount with Suction Cups
  5. Owner's Manual

Product Features

Number of Modes
This number indicates how many modes the radar detector can be set at. Most detectors will include a city and highway mode. More advanced radar/laser detectors will offer more modes to suit your needs.
Dark Mode
Dark mode is a brightness option. Unless there is an alert, the unit will be completely dark.
Voice Alerts
The feature designates if the unit uses voice alerts. Voice alerts will audibly alert the driver of various warnings.
Auto Mute
The auto mute function will conveniently mute the alert tone when the alert lasts for an extended period of time. This is for the drivers convenience during extended encounters.
Auto Shut Off
A convenient feature that turns off the unit when the ignition is turned off.

Product Specifications

Radar Display
The type of display that the radar detector has.

LED Displays: Tells the driver what he or she needs to know through a bright LED display.

LED Icon Indicators: Tells the driver what he or she needs to know by illuminating icons and symbols.

Text Display: Tells the driver what he or she needs to know by illuminating text on the display.

Text Display
Signal Strength Meter
This feature means that the unit displays that strength of the received signal.
Brightness Control
If the brightness of the unit can be conveniently adjusted and controlled, it will be listed here.
Turn-on/off Select Bands
Many radar detectors can detect many different bands of signal. This feature designates if the user can select what bands he or she has on or off.
Unit Mounting
Different radar detector are attached to the vehicle in different ways. The most common is for it to be suction-cupped to the windshield. This allows the unit to be moved from one vehicle to another with ease. Another mounting option is called remote-mounting. A remote mount unit is directly installed into your vehicle.

Other ways to mount your radar detector include Velcro and adhesive.

Suction cups
Power Source
The power source is the method in which the unit receives power. Some units will be powered by batteries, while others will need to be plugged in to an AC or DC power source.
12V DC Car Adapter
Direct Power Accessory
If there is an optional accessory to the unit that will provide power, it will be listed here.
Travel Case Included
If a protective travel case is included, it will be listed here.


Number of Detected Bands
This number indicates the number of bands the radar/laser detector protects against. The term band includes different radars, lasers, and safety signals, among others. The higher the number, the greater the protection.
X Band
X Band is a frequency used for detecting speed from a police radar.
K Band
K Band is the most popular radar frequency band that is used today. It is able to detect speeds from a stand still location, or from a moving vehicle
Ka Band
Ka Band operates within the frequencies 26.5-40 GHz. This is the newest introduced radar band and it is becoming more and more popular. It rarely has a false alert.
Ku Band
Ku band ranges from 12-18 GHz when used in radar applications.
This feature specifies if the unit will detect lasers.
VG-2 Immunity
The VG-2 detects radar detectors. Radar detectors with VG-2 immunity will be immune to the VG-2 radar and alert the driver when they are under such surveillance.
Pop Alert
Some radar guns operate in a POP mode so they can get a speed reading of a target vehicle extremely fast, resulting in most radar detectors not being able to consistently signal an alert. There are very few radar guns in service in the U.S. capable of POP mode operation. If your radar detector is Pop Alert capable, you may notice an increase in Ka-band false alerts when POP mode radar detection is switched on.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
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3 Star
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1 Star

Average Attribution Rating


Miami, FL


March 7, 2012

OK, I'll keep it short and sweet. I have had the RL100 for about 8 months now and I've been happy. I'm not bashing Bel but I have a vector995 I picked up recently for my lady and it works but sucks compared to my K40. The range on K40 is better and I don't get all the false alerts like the vector995. Not saying I never get false readings on my K40 but not NEAR as often as vector995. I mounted them both under my rearview mirror for best range ( i recommend doing that if you can, there is a company called blend mount that makes the special mounts and makes it look clean). There is supposed to be a ticket guarantee which supposedly pays your speeding ticket but i'm not going to try and find out. Last thing, I called the manufacturer to ask a question and it is almost scary how nice they are. Better nice than not. I guess this really isn't short and sweet

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: K40 RL100