Outdoor Microwave Motion Sensors. Range: 50 m. Frecuency MW: 10,525Ghz. Working Tª: -25ºC up to 55ºC. Dimensions: 310 x 260 mm. The MRW series microwave barriers are X-band microwave outdoors motion sensors used in high risk applications where the presence of the intruder needs to be reported. Microwave technology products have maximum reliability. Changes in weather conditions do not impact on the working principle of this technology.