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How Do I Program a Liftmaster 371LM Remote

Residential Door Opener RepairBy DoortecMarch 18, 2014

Locate the purple smart button on the back of your Liftmaster garage door opener. The smart button may be behind a light cover and its always near the antenna wire. Step 1:Push the purple smart button and let off. Step 2:Hold your remote button down until you see the light bulbs flash on and off…

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