Keyless entry pad: the unit attached to the outside of your home that accepts a PIN number which opens your garage door
Keypad: the unit attached to the outside of your home that accepts a PIN number which opens your garage door
Motor unit: the part of your garage door opener hanging from the ceiling of your garage
Power head: the part of your garage door opener hanging from the ceiling of your garage
Remote control: buttons on a unit that you keep in your car or purse to open your garage door
Torsion springs: springs mounted above your garage door on a horizontal shaft
Transmitter: buttons on a unit that you keep in your car or purse to open your garage door