The Genie ChainMax1000 model 3022-TV residential garage door opener from Garage Door Supply Company has a whisper-quiet 3/4-horsepower 140-volt DC motor that will operate garage doors up to 7 feet high. To operate an 8-foot door, simply add Genie's 8-foot door chain extension kit. The 3022-TV Genie ChainMax 1000 motor has an opening speed of up to 7.5 inches per second. A Genie garage door opener battery backup is optional. This ChainMax 1000 3022-TV garage door operator is equipped with Genie's trademarked GenieSense monitoring and diagnostic technology and GenieSense noise-minimizing technology. The built-in Intellicode Access Security System uses rolling codes to prevent hacking the code or pirating the signal. This garage door opener is compatible with all HomeLink, Car2U and Aladdin Connect systems. This Genie operator's Auto-Seek dual frequency system will operate with 315MHz or 390MHz remote transmitters. Safety features include Genie's trademarked Safe-T-Beam safety beam set non-contact reversing system monitored by a trademarked Door Detect monitoring system. An emergency release system is in place for manual operations in case of power outages. Also included with your Genie ChainMax 1000 opener is two 3-button Genie garage door opener remote control transmitters and a Genie wall console to operate the garage door from inside your garage.