Chamberlain Whisper Drive 3/4HPS Garage Door Opener with Innovative Belt Drive Battery Backup, WD962KEV: * 3/4HPS DC belt drive system for the ultimate in quiet performance * Battery-backup system provides up to 20 open/close cycles in the first 24-hours of a power outage * Timer-to-close feature can automatically close the garage door after 1, 5 or 10 minutes * Motion-detecting control panel allows easy programming of remote controls, keypads, MyQ lighting accessories and turns lights on automatically when movement is sensed * Auto-force sensing technology constantly monitors garage door opener system and adjusts forces to temperature fluctuations * Quick-install rail system provides faster and easier installation, assembles in 60 seconds * Delivers 200-watts of light with adjustable light-time delay * Homelink compatible (the in-vehicle remote control system) * Includes two 3-button remote controls, 1 wireless, keyless entry system and 1 control panel (not shown)