Whistler's XTR-420 laser/radar detector is a battery-powered unit that's as affordable as it is full-featured. With total band protection from radar signals, 360-degree laser detection, Whistler's patented VG-2 cloaking technology, and plenty more, you'll get an effective detector that doesn't break the bank.  A battery-powered unit that's as affordable as it is full-featured. Click to enlarge. |
 4.90 x 3.15 x 1.45 inches and just 9 ounces. |
 This unit features Whistler's low-profile "alert periscope" LEDs that flash when the unit alarms. |
Battery Powered Operation
The unit can provide approximately 15 hours of laser/radar detection on three rechargeable batteries (included). It's handy for those who frequently switch cars, or use rentals, or who just don't want a power cord dangling over the dash.
A power cord is included, which will both provide power to the detector and recharge the unit's batteries.
Icon Display
The XTR-420's bright icon display offers easy-to-read display to indicate power, city mode, radar band identification, and signal strength.
Twin Alert Periscopes
Whistler's Low Profile Alert Periscopes provide an added attention getting visual alert. The two extra LEDs flash on and off when the unit alarms to provide a unique visual alert.
Total Band Protection
This unit provides complete band coverage of all Laser, Radar (X, K, and Ka bands), VG-2, and Safety Radar bands.
360 Degree Protection
Units with 360 protection detect signals from all radar, laser, VG-2 and safety radar systems wherever they come from; front, rear or from the side.
3 City Modes/Highway Mode
Highway mode provides full audio and visual warning of laser/radar systems while maintaining full sensitivity, and is the default setting of Whistler laser/radar detectors. City mode helps reduce the annoyance of automatic door openers and burglar alarm alerts by providing an initial alert (same distance as Highway Mode) then remaining quiet unless the signal strength becomes very strong. When the signal increases the unit will alert briefly to notify you of the change in signal strength.
High Gain Lens
A high gain optical lens provides increased sensitivity and field of view for leading-edge laser detection.
Tone Alerts
Provides distinct audio warnings for X, K, Ka band radar, safety radar, laser and VG-2.
Stay Alert
Whistler's exclusive Stay Alert feature tests your alertness on long trips.
Dim/Dark Mode
Dim/Dark Mode reduces the illumination of the display. reduced. Dim or dark can be engaged during an alert. In Dark Mode, the display goes dark for as long as a signal is being detected and for 20 seconds after, then the display returns to the dimmer setting.
Quiet/Auto Quiet Modes
Pressing QUIET before a signal is detected engages Auto Quiet Mode, which automatically reduces the audio level after the initial warning to a low audio level setting. Pressing QUIET during a radar/laser encounter silences audio alerts, while allowing visual alerts to keep you informed.
Alert Priority
When two or more signals are received at the same time, the alert priority is: Laser, VG-2, Speed Radar, Safety Radar.
Example: If X band is alerting, then suddenly a VG-2 signal is detected, the VG-2 warning will override the X band alert.
Setting Saver
Setting Saver saves your personalized settings so that when the detector is turned off and then on again, you do not have to re-enter them.
Selectable Auto Shut Off
Auto Shut Off Mode automatically shuts off the detector. The timer is reset when the detector is turned off, the power cord is unplugged, or a button is pressed. This helps save batteries. The detector will alert you with an audible and visual warning before it shuts off.
Safety Warning System--SWS
This relatively new radar is not for speed detection at all, it is used to keep you informed of highway safety. Transmitters are installed and programmed (for example: in emergency vehicles) to make you aware of possible situations that may require your attention, such as: ambulance vehicles that are moving or stationary, road hazards ahead, road construction delays or detours, etc.
VG-2 Cloaking
The VG-2, also known as a "radar detector detector," is a special receiver used by police to detect signals radiated by a radar detector. Thanks to Whistler's patented VG-2 cloaking technology, your detector will remain invisible to VG-2 detection.
What's in the Box
Whistler XTR-420 Radar/Laser Detector, Windshield Mount, Power Cord, User's Manual
