Garage door opener remote works in conjunction with a remote transmitter, which allows you to open the garage door from within your vehicle. You can install a Craftsman garage door opener in a day, using standard woodworking tools. Craftsman garage door remotely open the sliding garage doors via motorized tracks, and can be programmed for virtually any engine because they are not model-specific. The lithium battery is intended for long-term use about five years but is still available when it is time to use a new battery. The unit needs a 3-volt CR2032 lithium battery, which can be found in many hardware and general stores, and pharmacies.
Slide the metal clip from the back of the unit and insert it into the opening of the same size on the side of the garage door opener remote. Pry the rear end of the door opener away using metal clamp as a lever and the finger as a fulcrum, if necessary.
Turn the unit upside down with his hand in order to allow the discharged battery to fall into your hand. Put a new one in the vacant slot, with the negative side facing the front of the garage door opener remote. Snap back plate back on the front panel and slide the metal clamp in place.