Sears Craftsman 139.53664SRT2 Garage Operator Receiver Logic Board. Replacement Garage Door Parts.
Liftmaster and Chamberlain Compatible (41A5021-2C | 41A5021-I).
971LM Remote Control Compatible.
976LM Keyless Entry Compatible.
Security + Frequency 390 MHz.
We always ensure board compatibility. You will receive a perfectly and compatible replacement board that will fit your operator.
THIS IS AN OEM LIFTMASTER PART THAT IS A REPLACEMENT PART FOR THE SEARS CRAFTSMAN GARAGE DOOR OPENERS