Chain best 550 Essentials - 1/2 HPc Durable Chain Garage Door Opener

Product Name: Chain best 550 Essentials - 1/2 HPc Durable Chain Garage Door Opener
Garage Door Safety Sensors: Puts an invisible beam across the door opening. The door stops and reverses to the open position if anything passes best through the beam.r Monitoring and Diagnostic Technology: Provides safety by continuously monitoring the operation of the garage door opener, stopping the operation to alert you when significant changes occur.r Access Security System Superior: Garage door opener remote encryption technology (also known as rolling codes) that prevents piracy of the radio signal from the remote that opens your garage door by continually seeking a new code from billions of combinations.r 5-Piece tube chain drive rail system: Strong and rigid yet lightweight that requires no assembly hardware.r Pre-Programmed Remotes: For faster installation, remotes are ready to use out of the box which eliminates one step during the initial installation process.