Certified to work with DIRECTV PROGRAMMING FROM SATELLITES 101,99,103;Connect up to 4 receivers WITH 4WAY SWM SPLITTER;MOUNT: SHORT STUB ROOF MOUNT ONLY , WORKS FROM 0 TO 45 DEGREE ROOF PITCH IN ORDER TO KEEP POLE AT 90 DEGREES. IT DOES NOT WORK ON A SIDE WALL OR ROOFS WITH 46 DEGREES OR MORE PITCH .;COMPLETE DISH WIT H4WAY SWM SPLITTER AND 21V POWER SUPPLY;Compatible with DIRECTV receivers D12,H20,H21,H23,HR20,HR21,R22,HR22,hr23,HR24,HR34,r16