RDU2080D Two Way Radio features 89 built-in frequencies, with 83 digital and 38 analog private line codes and designed to Mil-Spec 810 IP54 specifications. Offers LCD screen with battery meter, signal strength indicator and call alert button with three tones, audio accessory jack, selectable channel scan and voice scramble. In steel/concrete buildings, range is up to 250,000 square feet or up to 20 floors, or up to 5 miles outdoors in flat unobstructed areas.