3850 - DC Motor Belt Drive with Integrated EverCharge Standby Power

Now when the power goes out, your garage door opener still goes up. The stylish 3850 has a unique feature that no other system can offer. It's the only opener with the patented EverCharge^TM  Standby Power built right in to power the opener and all of its safety features when you need it most.

Always charged and ready, it provides the highest level of safety and convenience imaginable. Plus, it's possibly the quietest system ever created. The powerful 12V DC motor features a belt drive system that provides ultra-quiet operation, along with smooth start and smooth stop to reduce the noise of the garage door as it opens and closes - perfect for homes with a room above the garage. Part of the Elite Series, it is designed to exceed expectations.

The Difference...
Chamberlain® offers the only opener that features an integrated standby power system to reliably open and close the garage door even when the power goes out.

• Ultra-quiet 12V DC motor with belt drive system
• Now you can still operate your garage door opener for 40 full cycles within a 24-hour period if your power is out
• Safety and security features will continue to operate , ensuring your family is still protected in a power failure
• Alerts you when in use - an audible signal tells you when the battery backup system is operating

STANDARD FEATURES

• Strong and silent 12V DC motor provides smooth start and stop operation for less wear and tear
• Push button limit settings/automatic force sensing - Auto-force feature constantly monitors garage door system and adjusts forces to temperature fluctuations, floor height and door track movement 
• Includes The Smart Garage Door Opener® - lets you electronically program security codes from the Smart Control Panel^TM  or the powerhead
• Enclosed gear case - provides continuous lubrication and protection for longer life and smoother operation
• Ideal for vaulted ceilings - a 6-foot power cord makes connecting to a power source easier than ever
• Non-yellowing hinged light lenses for easy bulb replacement
• Delivers 200 watts of light to fully illuminate your garage; length of time light stays on is adjustable from 1.5 to 4.5 minutes

INCLUDED ACCESSORIES

• Smart Control Panel^TM  - displays time, temperature and important system status messages, making it easier to maintain your system. Also turns on garage door opener lights automatically when you enter a dark garage - hands free
• Premium Remote Control -  the only remote control that automatically lights up as you bring your hand nearby, so you'll always know which button to press, even in the dark

SAFETY FEATURES

• Includes The Protector System® - projects an invisible light beam across the garage door opening and automatically reverses the door if anything interrupts the beam while door is going down
• Equipped with  PosiLock® - stops intruders by securely locking the garage door when it is down
• Manual release handle  in case of power failure

WARRANTY

• Lifetime motor and belt warranty 
• 5-year parts warranty
• 1-year warranty on EverCharge^TM Battery Backup System

© 2011 All rights reserved. Door Doctor West | Door Doctor West is the leading provider of garage door repair in and around Anthem, Apache Junction, Avondale, Awhatukee, Buckeye, Carefree, Cave Creek, Chandler, Desert Hills, Desert Mountain, El Mirage, Estrella, Fountain Hills, Gilbert, Glendale, Gold Canyon, Goodyear, Higley, Laveen Litchfield Park, Maricopa, Maryvale, Mesa, New River, P.V., Paradise Valley, Peoria, Phoenix,, Queen Creek, Rio Verde, Scottsdale, Surprise, Sun City, Sun City West, Sun City Grand, Sun Lakes, Sunnyslope, Tempe, Tolleson, Waddell, and Youngtown Arizona.