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Whistler XTR-440 Cordless Radar Detector


Quick Overview

The Whistler XTR-440 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. This makes the XTR-440 great for use on motorcycles, or for those that need an easy to transport detector.

Availability: Discontinued

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


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-440 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-440 detects POP mode radar, and offers a blue backlit text display.

A key feature of the Whistler XTR-440 is the built-in battery charger. The XTR-440 also features Whistler's popular dual low profile alert periscope.

The Whistler XTR-440 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 Quiet/Auto Quiet, Auto Shut Off, and Selectable Tone Alerts.

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-440 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 Alert
  • Cordless
  • Built-in Battery Charger and Rechargeable Batteries Included
  • Detailed SWS™ Alerts
  • Blue Backlit Display
  • Dual Blue Alert Periscope LED's
  • 3 City Modes and Highway Mode
  • Filter Modes
  • Auto and Manual Muting
  • 7 Dim/Dark Display Settings
  • Auto Shut-Off
  • Setting Saver
  • Stay Alert
  • Volume Control
  • Self Test
  • Tutorial Mode
  • One Year Manufacturer Warranty

Included with the Whistler XTR-440

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

Additional Information

Signals DetectedInstant-On (Pulse) Radar, K Band, Ka Band, Laser (front / rear), POP Mode Radar, Safety Warning System™ (SWS™) Alerts, X Band
Warranty1 Year
RDD ImmunityVG-2 Alert
Display TypeText
FilteringCustom Filter Modes, Multiple City Modes
Mounting StyleWindshield
Power OptionsCordless
  1. Good for the price review by TDI Girl on 1/18/2012

    It shuts off and I'm not sure why. BUT It warns you very loudly it is doing it AND all I do is turn it back on and it's fine. I have not figured out all the settings and what extends the battery life BUT I am working on it.

  2. Bargain detector that works review by Sean D on 8/25/2011

    Most reviews say short battery life, drove 11 hours straight on just battery only with dim until a warning - saved me 2x just on that trip alone. Clear loud alerts. Agree with other posts, hard to read LCD during the day when sun is shining, but you can still hear the loud alerts.

  3. Works great review by JMS on 1/21/2011

    [...]I have 3 detectors and this one works great especially with no wires. The only bad feature is the screen is hard to read in the light otherwise it works great.

  4. I highly recommend this prodct review by whartford on 11/8/2010

    I like every thing about this product and the company was easy to work with.

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