The Genie ChainMax 1000 garage door opener offers a durable 140v DC motor. The ChainMax garage door opener features a Genie enclosed C-Channel rail allowing for fluch-mounting capability and a clean appearance while ensuring the highest levels of safety and many years of reliable opeartion. Other safety features include the self-diagnostic GenieSense technology and the Safe-T-Beam system which helps prevent accidents with an infrared beam of light across the door opening. The DC motor operates powerfully and quietly with soft start and stop technology, making your door travel smoother.