1 The second rectangle has a length of 16 centimeter (6.3 in) and a width of 8 centimeter (3.1 in). 2  Find the linear scale factor between the two shapes. 3  The length of the smaller rectangle corresponds to the length of the larger rectangle. 4  The length of the smaller rectangle equals 4 centimeter (1.6 in).
Reset the Keypad. The Smart or Learn button on the motorized unit attached to the garage ceiling resets the keypad and the control unit that operate the garage door opener's motor. You'll need to enter a new code into the keypad to make it operational again and reprogram the control unit.o verify that the reset took, enter the old PIN code into the keypad to see if it opens the garage door. If it does, the reset didn't take. Repeat the step to reset the keypad and verify the old code doesn't work before proceeding.
After installing the motor and its chain or belt, just keep a remote in the glovebox or clipped to the visor of your car and never strain yourself again trying to quickly lift or lower the door. Many of the latest garage door openers include outdoor keypads for easy entry. If you get locked out or need to give access to a friend or family member to watch the home while you're away, simply use and distribute the code for entry. When you return home, simply update the code for added peace of mind.