Liftmaster, Chamberlain, Sears, Security Plus garage door openers operating on 390 Mhz frequency.Works with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 390 Mhz frequency. Opener models 1240R, 1245R, 1246R, 1255R, 1256R, 1265R, 2245, 2255, 2265, 2280, 2575, 2595, 2580, 2585, 2110, 2220, 1000SDR, 2000SDR. Circuit board rear panel numbers 41A5021-3, 41A5021-1, 41A5021-2, 41D4674-10, 41D4674-11, 41A5483-2, 41A5483, 41A5389-1 (Don not worry about the letter following your circuit board number it is used as a revision tool for inventory purposes) Sears numbers on rear or side panel 139.53661, 139.53661SRT, 139.53661SRT3, 139.53662, 139.53662SRT, 139.53662SRT2, 139.53663, 139.53663SRT, 139.53664, 139.53664SRT, 139.53664SRT2, 13953670, 139.53670SRT1, 139.53671, 139.53671SRT, 139.53671SRT3, 139.53672, 139.53672SRT, 139.53672SRT2, 139.53672SRT3, 139.53673, 139.53673SRT, 139.53673SRT3, 139.53674, 139.53674SRT1, 139.53674SRT2, 139.53675, 139.53675SRT1, 139.53675SRT2, 139.53677, 139.53677SRT, 139.53677SRT3, 13953910, 139.53914, 139.53954, 139.53961, 139.53961SRT, 139.53962, 139.53962SRT, 139.53962SRT1, 139.53963, 139.53963SRT, 139.53964, 139.53964SRT, 139.53966, 139.53966SRT, 139.53966SRT1, 139.53974, 139.53974SRT, 139.53975, 139.53975SRT, 139.539SRT1, 139.53976, 139.53976SRT, 139.53978, 139.53978SRT, 139.53978SRT1, 139.53982SRT, 139.53985, 139.53991, 139.53991SRT, 953CB, 956CB, 139.53680, 139.53681
