Whistler XTR-540 Cordless Radar / Laser Detector

The Whistler XTR-540 Cordless Radar / Laser Detector offers high-tech features and advanced technology in a cordless package, perfect for quick-mounting on your windshield. This battery-powered unit requires no car electricity to run, and offers you great protection like 360-degree band coverage, POP mode detection, and a driver Stay Alert feature. With a blue backlit display, low-profile antenna, and 72-point digital compass, this compact little detector has everything you need.

Advanced Features of the Whistler XTR-540

Battery-operated with internal battery charger
The XTR-540 doesn't require car electricity to operate. It comes complete with three rechargeable batteries plus a power cord, and can simply be recharged when it's running low.

72-point digital compass
72 total points of reference make the digital compass built into the XTR-540 extremely accurate. To use, simply mount the unit inside your vehicle in a level position, away from other magnetic sources such as speakers. Select a clear area in which to park, such as a parking lot or field, and follow the directions in your owner's manual to calibrate the compass. Calibration will stay set even when the unit is removed from the vehicle, although you should recalibrate if you reposition the mounting bracket to another location.

POP mode radar detection with twin alert low-profile periscopes
POP mode is a form of police radar gun developed several years ago in an attempt to offer radar that would defeat detectors. The transmissions from POP mode radar are much faster than those from typical radars, and are emitted in short bursts rather than long signals like those from typical radar. The XTR-540 can detect even the quick signals of POP mode radar in your area, and alert you in plenty of time. Flashing LEDs on the twin low-profile periscopes give you a visual warning, but can be turned off if you choose.

3 city modes and 1 highway mode
City mode helps reduce the interference and confusion that can be caused by things like automatic door openers, burglar alarm alerts, and other things that can cause your detector to react. While in city mode, the detector will provide an initial alert when signals are detected, and then remain quiet unless the signal strength increases. When and if the signal does increase, the unit will alert you again to notify you. This helps "weed out" other types of signals. In highway mode, the XTR-540 provides full audio and visual warning of all laser and radar signals and maintains full sensitivity at all times. Highway mode is the set default.

Quiet and Auto Quiet modes
Quiet Mode cancels audio during an alert for 20 seconds. After 20 seconds, two beeps are provided on any new alert, and then the unit will remain quiet after that. Auto Quiet reduces the audio to level 1 approximately five seconds after a signal is detected.

Radar Frequencies:

• 10.500 - 10.550 GHz (X band)
• 24.050 - 24.250 GHz (K band)
• 33.400 - 36.000 GHz (Ka Superwideband)

Additional Specifications

• Selectable tone alerts - choose one that's easy for you to hear
• Stay Alert setting asks you to push buttons in response to beeps to prove driver alertness
• 2 filter modes provide extra filtering
• Dim and dark modes for day or nighttime driving
• Vehicle battery saver option automatically shuts off unit after 6 hours
• Battery voltage gauge
• Safety Warning system keeps you informed of highway safety conditions by alerting you to ambulances, non-moving vehicles, and other road hazards
• High-gain lens for increased field of view
• Blue backlit text display
• Windshield mounting bracket, hardware kit, batteries, and power cord included
• Measures 4.92L x 3.15W x 1.45H inches; weighs 9 ounces
• Sleek black body color
• 1-year manufacturer's warranty included
• Laser wavelength: 905 +/- 10 nanometers
• Operating temperature range of -10 C to +70 C (14F to 158 F)
• Power requirements: operational 12 to 15 volts DC, 250mA nominal
• Vehicle battery saver operates at 30mA nominal