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Whistler XTR-540 Cordless Radar Detector

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Quick Overview

The Whistler XTR-540 radar detector is a full featured radar detector that is also battery powered. This means you have all of the great Whistler features in a cordless model. The XTR-540 detects POP mode radar, and offers a blue backlit text display.
Free Gift With Purchase
Sale Price

Availability: Discontinued

This product has been discontinued and is no longer available. It was replaced by the Whistler XTR-445 Cordless Radar Detector .


$5 Ground Shipping!! LIMITED TIME OFFER - Purchase this Whistler Radar detector and receive one FREE Whistler Socket Multiplier (Model 203285), a $10 value! Offer good while supplies last. More details below.

The Whistler XTR-540 radar detector is a full featured radar detector that is also battery powered. This means you have all of the great Whistler features in a cordless model. The XTR-540 detects POP mode radar, and offers a blue backlit text display.

A key feature of the Whistler XTR-540 is the built-in battery charger. The XTR-540 also features Whistler's new attention grabbing feature, the dual low profile alert periscope.

The Whistler XTR-540 also features 3 city modes and 2 filter modes which allows you to block out many false alerts. An Alert Priority feature makes sure the most important alert is displayed if multiple alerts are detected. Other features include Patented VG-2 Cloaking™ Technology and a 72 Point Digital Compass.

Free Socket Multiplier Promotion

For every Whistler radar detector that you purchase, you will receive one FREE Whistler Socket Multiplier, model 203285. This socket multiplier is a $10 value.

This promotion item will be automatically added to your order at the time of checkout. This is a limited time offer and is not valid when combined with any other offer or promotion. Available only while supplies last.


Whistler XTR-540 Features

  • X, K, Ka, and Super Wideband Ka Detection
  • 360° Protection against all types of Laser
  • Instant-On (Pulse) Detection
  • Detects POP Mode
  • Safety Warning System™ (SWS™) Alert
  • VG-2 Stealth
  • VG-2 Alert
  • Cordless
  • Built-in Battery Charger and Rechargeable Batteries Included
  • Detailed SWS™ Alerts
  • Blue Backlit Text Display
  • Dual Blue Alert Periscope LED's
  • Signal Strength Indicator
  • Compass
  • Selectable Bands
  • 3 City Modes and Highway Mode
  • 2 Filter Modes
  • Auto and Manual Muting
  • 7 Dim/Dark Display Settings
  • Auto Shut-Off
  • Setting Saver
  • Volume Control
  • Self Test
  • Tutorial Mode
  • One Year Manufacturer Warranty

Included with the Whistler XTR-540

  • Windshield Mounting Bracket
  • Power Cord
  • (3) AA Ni-MH Batteries
  • Owner's Manual

Additional Information

Signals Detected Instant-On (Pulse) Radar, K Band, Ka Band, Laser (front / rear), POP Mode Radar, Safety Warning System™ (SWS™) Alerts, X Band
Warranty 1 Year
RDD Immunity VG-2 Alert, VG-2 Undetectable
Display Type Text
Filtering Custom Filter Modes, Multiple City Modes, Selectable Bands
Mounting Style Windshield
Power Options Cordless
  1. Quality equal to price review by handyman on 8/7/2012

    A lot of false alarms, compass has never worked and battery life is less than 10 mins.

  2. Great detector, great value review by Bucky on 4/2/2012

    The XTR 540 works great and is very reasonable for a cordless detector.

  3. Good little unit review by BlackFLHTP on 3/29/2012

    NOT really intended for a motorcycle.NOT water resistant.I wouldnt trust the suction cup mount on a bike without a safety lanyard etc.Original batteries were bad but they replaced them promptly at ZERO cost to me.Replacement batteries last much longer,but still nowhere near the MFGrs claim of 14 hours.Overall I am satisfied with the unit,taking into consideration the low price,and the service response was excellent.I would recommend them to my friends/family etc

  4. Great Detector review by Ducky on 1/17/2012

    Great Detector and easy to use, well built, compass comes in very handy, wouldn't want another detector without the compass feature.

  5. HORRIBLE review by angry at product on 9/2/2011

    Did not detect radar until after the cop had turned on his lights. Horrible product. Would give it to an emeny

  6. Best Radar Ive owned, Its Cordless!! review by Howie T. on 6/3/2011

    The Blue screen matches my Blue car and Blue Alpine radio buttons. From the sound to the neat screen everything is adjustable. No tickets with this and best thing is it's Cordless!!

  7. still learing the features but happy review by benji on 5/4/2011

    it is very usefull, but still learning its features... sometimes hard to read and work out what it is detecting, but overall very happy..

  8. I would reccomend this to anyone. review by goldwing182 on 4/11/2011

    I use it going to and from work and for pleasure. Also will mount on my motorcycle which I love.Display is kind of hard to see in the sun but I can live with that.

  9. Works Great! review by Bill on 3/16/2011

    I'm using this on my 2010 HD roadglide Motorcycle. Just mounted it to the windshield and used Velcro to stabilize it. Works great. The built in compass Is also handy. Battery seems to have a long life 2-3days. It hasn't gone dead on me while riding yet. I also have it running AC from my bike. Blue indicators are great ,can be seen in sunlight. Price was right. Better than the expensive motorcycle Units. It has already saved me 400.00 :)

  10. Works Great! review by Bill on 2/26/2011

    Working great, mounted it on an 2010 road glide. Great Battery operation! Price is right!!!

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