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Always disconnect operator from door before programming
to avoid injury to yourself or the operator
CHAMBERLAIN-LIFTMASTER
66LM & 976LM Wireless Keypad
- Look for the antennae wire near the rear of the motor head, within about 2 inches of where the antennae wire disappears into the motor head there is a brightly colored button (the "SMART" button).
- Press and release the "SMART" button.
- Go to the keypad and press your 4 digit PIN number & "ENTER", "ENTER".
To remove old transmitter and/or keypad codes
- Press and hold the SMART button until the small light goes out.
- Try a transmitter to make sure the old code has been erased.
- Press and release the "SMART" button on the back of the motor. Press the transmitter button twice (repeat this step for each additional transmitter or keypad).
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