Noise temperatures as low as 30K, all C-Band frequencies available, 36-month warranty, compact design - no add-on modules for AC power or fault alarm options, input and output isolators, +12 to +28 VDC operation, cable power standardm, +12 to +28 VDC operation; +15 to +28 VDC with F1 option) in addition to the DC connector, waterproof, painted aluminum housing, voltage surge protection, reverse voltage protection, pressurizable feed.