The Cobra XRS-9840 offers an amazing cool blue graphical display! This DataGrafix™ display is very bright and highly visible. The display looks great and is suprisingly easy to read. It also allows the detector to provide a truly easy to use settings interface.

The Cobra XRS-9840 12 band™ radar detector features Cobra's Xtreme Range Superheterodyne™ Technology, which provides more range than similarly priced prior Cobra models. In addition, the Cobra 9840 provides selectable voice alerts, and includes a built-in 8 point electronic compass.

The XRS-9840 radar detector features an intuitive IntelliMute™ feature which will automatically mute the detector based on your speed. This model will also detect POP radar, and even has built-in support for the Ku band which is currently used in Europe.

The Cobra XRS-9840 responds to all types of radar currently in use by police, and provides 360 degree detection of all types of laser guns laser. The XRS-9840 also provides detailed messages from Cobra's exclusive Safety Alert® and Strobe Alert warning systems. The Cobra XRS-9840 is immune to the VG-2 radar detector detector, and provides alerts when VG-2 is in use.

Cobra's Strobe Alert will alert motorists to over 50,000 emergency vehicles equipped with strobe transmitters that activate red lights at traffic intersections in emergency high speed situations. Call your local Fire/Police department for your area coverage.