Myq Smartphone-enabled 200w Of Light Turn On Automatically When Garage Door Opens For Added Safety (bulbs Sold Separately) Smartphone Monitoring & Control With Myq Gateway (sold Separately) Durable 1/2hp Motor & Steel-reinforced Belt Drive Provides Ultra quiet Operation Motion-detecting Control Panel Programs New Remotes & Myq Accessories Belt drive system with ultra-quiet operation featuring our exclusive Motor Vibration Isolation System. MyQ technology enables you to Monitor, Open and Close your Garage Door from a Smartphone (Internet Gateway (CIGBU) needed and sold separately). Timer-to-Close feature can automatically close the garage door after 1, 5, or 10 minutes Protector System safety sensors will stop the door from closing if contact is made with a person or object PosiLock theft protection assures that once the door is closed, it stays locked The Chamberlain Whisper Drive Ultra-Quiet & Strong 1/2 HP steel-reinforced Belt Drive garage door opener is the ultimate blend of power and quiet. It features our exclusive Motor Vibration Isolation System (MVIS) – which eliminates power head vibration for reduced noise – making it the ideal choice if you have rooms positioned above the garage. As an added convenience feature, the opener has a timer-to-close function that will automatically close the garage door in case you forget. It also features our MyQ technology that allows to you monitor, open and close your garage door from anywhere all from your smartphone(with purchase of a Chamberlain MyQ Internet Gateway (CIGBU), sold separately). Unit includes two three-button remote controls, wireless keypad, motion detecting control panel, safety sensors and delivers 200 watts of light for added safety (light bulbs sold separately). HomeLink Compatible – Compatible Bridge (not included) necessary for certain vehicles. Visit bridge.chamberlain.com to find out if a Bridge is needed.
So before buying this on Amazon, I noted a good number of reviewers had trouble installing the belt tensioner assembly. When I got to that section of the manual yesterday, I was stumped too. So I shuffled through all the miscellaneous paperwork that came in the box, looking for a help-line phone number, when what did I discover, but a separate printed addendum to the installation manual. That took care of it.By the way, before buying this, take a look at the pri..