| Replacement Logic/Circuit board (receiver board) for ALL Security+ operators (no light socket). |
| For Chamberlain garage door opener operator models 4200, 2200 and 1200. |
| Replaces logic board models 41A5021-1, 41A5021-1B, 41A5021-1C, 41A5021-1D, 41A5021-1E. |
| Also compatible with Security+ systems from Chamberlain, Craftsman, Master Mechanic, Sears and Wayne Dalton. |
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