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K40 RLS2 Radar and Laser Detector with GPS

  • Traffic Sensor Filter
  • GPS with Speed Monitor
  • Fully Programmable Radar/Laser Alert Options
  • Ticket Free Guarantee

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K40 RLS2

Radar and Laser Detector with GPS

  • Portable Performance Taken to the MAX
  • Utilizing many of the same advanced technologies found in our acclaimed remote installed radar detection systems, the high-performance RLS2 packs a powerful defensive punch into a convenient, portable design.
  • Maximum accuracy is assured thanks to the intelligent K-Band filter that automatically scans and rejects radar-based safety features.
  • By employing state-of-the-art GPS communication, maximum convenience is delivered with “Mark to Mute”. Just one button push is all that is required to permanently silence the audio warning of false warning locations you normally encounter.
  • With a variety of audible and visual warnings that warn what type of threat you’re facing as well as “geiger” audio effect that increases in intensity, you’ll be armed with maximum critical information so you can decide what action is required.
  • In addition to these early warning system features, 13 customizable settings give you maximum control over your driving experience.


  • K-Band Filter – An advanced, automatic filtering technology that intelligently recognizes and rejects radar-based safety features (such as adaptive cruise control or blind spot assist) in other vehicles so you can remain focused on real radar threats.

  • Traffic Sensor Filter – The RLS2 will reject alerts from traffic flow sensors usually encountered during highway driving.
  • Flexible Mute options – Offers multiple ways to silence alerts, including automatic volume reduction.
  • Dim – Adjust the intensity of the display depending on the time of day or your visual preference.
  • GPS Features – The RLS2 offers you 13 Customizable settings, including GPS features such as:
  •         Mark to Mute – Mute audible warnings of false, non-police radar locations you regularly travel past with a simple button push.
  •         Mark to Alert – Mark dangerous intersections, speed traps, school zones and red light cameras.
  •         Quiet Ride – Mute alerts under a pre-selected speed. Eliminates alerts when you plan to drive near, at or below the posted speed limit.
  •         Speed Monitor – Track your speed without taking your eyes off the road.
  • Fully Programmable Radar/Laser Alert Options – Enables you to eliminate audible and visual alerts to specific radar bands or laser.
  • Accessories Included – Everything you need to install the RLS2 is included: Fully-adjustable windshield mounting bracket with suction cups, a standard coiled power cord with 12V outlet adapter, and a straight power cord for a custom hardwired installation.
  • Voice or Tone plus Digital Display – Unique audible and visual warnings alert you to the specific police radar band targeting your vehicle as well as provide a “geiger” audio alert that accelerates as you near the threat.
  • Vibrant Dot Matrix Display – Great looking and easy to read, day or night. Easily adjust the brightness to suit your driving environment. Default display shows your filter setting, compass direction, and speed reading.


Detects all North American approved police radar frequency and radar gun:

Operating Frequencies

  • 10.500 – 10.550 GHz (X-Band)
  • 24.050 – 24.250 GHz (K-Band)
  • 33.400 – 36.000 GHz (Ka-Band)
  • 830 – 945 nanometers (Laser)

Power Requirements

  • 11.5 – 16.0 Volts DC negative ground
  • 170 mA typical standby


  • 5.11 in. L x 2.86 in. W x 1.39 in. H


  • 5.1 oz.

Three Filter Settings:
Level/Mode Sensitivity

  1. Highway Detects all North American police radar (X, K, and Ka-Band) and laser signals at full sensitivity.  Recommended Use:For highway travel or in any area in which you are unfamiliar with the types of radar used.
  2. City 50% reduction in X-band sensitivity. This is because it is the most common source of non-police radar signals. K, Ka, and Laser will remain at full sensitivity. Recommended Use: When travelling in an urban area with minimal non-police radar signals.
  3. Filter Eliminates X-Band detection completely. Reduces K and Ka-Band sensitivity by 50%. Laser detection will remain at full sensitivity. Recommended Use: When travelling in a congested traffic area with a high concentration of non-police radar signals.

Programmable Features:

  • Voice Type – Male / Female
  • Audible Voice – Voice On / Voice Off
  • Wake Up – Wake Up Long / Wake Up Short (abbreviated start-up sequence)
  • Speed Displayed – Speed On / Speed Off – for mph/kph on screen
  • Compass Heading – On / Off – directional heading on screen
  • Traffic Sensor Filter – Off / On – Enables filtration radar signals from traffic flow sensors
  • Quiet Ride – Set minimum detection speed from 5 mph – 75mph / 10 kph – 120 kph
  • Speed Monitor – Set to alert when a preselected speed is exceeded.
  • X-Band – On / Off
  • K-Band – On / Off
  • Ka-Band – On / Off
  • Laser – On / Off
  • Factory Reset

Radar Receiver Type

  • DSP Datadyne Technologies

GPS Receiver Type 

  • SiRFstar III

Display Type 

  • Full Dot Matrix Display

Signal Strength Indicators 

  • Audible Geiger and numeric signal strength indications

RDD Guard 

  • Protection from Radar Detector Detectors

Drive Ticket Free

Get a ticket, K40 pays for it. Period.* Simply send them a copy of the radar or laser speeding ticket, your proof of payment of the ticket, and your receipt for your K40 purchase.**
K40 started offering this guarantee in 1985 and they still stand by it today!

100% Ownership Guarantee

  • 100% Performance Guarantee – If your K40 Radar Detector or Laser Defuser does not outperform any other radar detector you’ve owned, return it within 30 days for a full product credit.
  • 100% One-Year Quality Guarantee – K40 will repair or replace any defective product for one full year from date of purchase.
  • 100% Theft Guarantee – If your custom installed radar detector is ever stolen, they'll replace it.***

To ensure you’re covered by all K40 guarantees, register your product today.


*Ticket-Free Guarantee not valid for tickets in school or construction zones. Incurred with a DUI or DWI violation, or for tickets received outside the U.S. and Canada.
**Installed radar detector systems must include the purchase of at least one Laser Defuser in order to be covered for any laser speeding ticket reimbursement.
***Theft claim must include complete copy of police report indicating details of loss to due theft, proof of purchase from an authorized K40 dealer, and proof of insurance reimbursement if applicable. This guarantee excludes portable radar detectors.

Product subject to one or more of the following U.S. Patents:
Other patents pending.

Additional Info

Name K40 RLS2 Radar and Laser Detector with GPS
Manufacturer K40
Manufacturer's Warranty K401YEAR
Manufacture's Warranty 2 N/A
upc 739238502009
Manufacturer Sku RLS2