| Two channel transmitter for use with two Sears, Lift-master or Chamberlain garage door openers. |
| Works on models manufactured between 1984-1992. |
| 2 sets of 9 three position dip switches |
| Lift-master compatible models: 51LM, 53LM, 54LM, LM61, LM63, LM64 |
| Chamberlain compatible models: 750CB, 753CB, 756CB |
| Sears compatible models: 139.53707, 139.53758, 139.53778, 139.53515, 139.53606, 139.65843. |
| Battery and visor clip included |
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