The Whistler TRX-2 Digital Scanner is a powerful desktop/mobile police and radio scanner with helpful features that make scanning fast and simple. Canadian and US databases are stored internally on the MicroSD card, providing access to comprehensive radio data without the need for Internet access. The TRX-2 is designed to bundle and map stored objects, giving you complete control when grouping objects and selecting groups for scanning. Its internal storage system saves up to 200 scanner configurations that are easily recalled in the field on the radio's keypad. This simplified keypad and display features familiar scan, pause, skip and navigation controls. The mobile scanner features programmable alarms that alert when certain objects are nearby based on user programming, and the tri-color LED displays thousands of custom combinations to indicate specific types of activity or activity on particular channels. The digital radio scanner records received objects and audio and is capable of playing back recorded content along with time and date stamps with its powerful built-in playback system. The system allows you to transfer data to PC for playback and archiving. A convenient alarm feature lets you program the scanner to turn on and begin recording at a pre-set time of day. The TRX-2 has predefined search ranges, so it's easy to find activity in your area and it sweeps and automatically tunes to nearby transmission source frequencies. It also has access to storm spotter network frequencies, so you're able to monitor up-to-the-minute storm information even before it's announced on the news. This desktop scanner has a built-in discriminator output that provides raw discriminator signal to third party decoding software without risky modifications, and it automatically detects and masks encrypted voice audio. The unit is sleek, slim and compact, and it has a textured finish for durability and easy one-handed operation.