The Motorola RDU4100 RDX business 2-way UHF radio is just what you need on the job site. Whether indoor or outdoor, this radio delivers a crisp and audible signal, reducing the wind noise and speaker magnetic field. Versatile and rugged, the RDU4100 provides clear audio transmission and will stand up to the most demanding physical conditions. The RDU4100 operates on business exclusive frequencies and features many codes to help ensure a clear channel. With the optional CPS interface, internal settings can be “tweaked” to suit your own needs. The RDU4100 meets military 810 C,D,E and F and IP-55 specifications for shock, rain, humidity, salt, fog, vibration, sand, dust, temperature shock and high and low temperature.