From the Manufacturer
Get superior, uniform performance with the unique Chamberlain Screw Drive design. The Chamberlain Screw Drive is encased in a self-lubricating plastic sleeve, removing the need for regular maintenance or greasing. Additionally, the unique Screw Drive design provides exceptionally uniform performance, making it the perfect drive system for California, or one-piece doors. As with all Chamberlain models, this unit comes equipped with Security and Rolling Code Technology to stop thieves and code grabbers. With every push of the button, your Chamberlain Security Remote transmits a brand new security code, with over 100 billion codes, it will never to be repeated. This unit also adds brawn to brains with its industrial strength 1/2 horsepower motor, capable of producing more than enough lifting power for your single or double garage door. Finally, this unit includes the Chamberlain Protector System, which automatically reverses the garage door if an obstruction is sensed. Includes two single-button remote controls as well as a Multi-Function Wall Control Panel.
From the Manufacturer
Encased in a self-lubricating plastic sleeve, Chamberlain's Screw Drive garage door opener requires no maintenance or greasing. The unique Screw Drive design ensures smooth performance for large, one-piece doors. As all Chamberlain models, this unit comes equipped with the company's Security Rolling Code Technology to thwart code-grabbing thieves. With every push of the button, your Chamberlain Security Remote transmits a brand new security code, one of over 100 billion codes never to be repeated. Not only is it secure, it's powerful, too. An industrial strength 1/2-horsepower motor produces more than enough lifting power for single or double garage doors. And, this versatile unit is equipped with Chamberlain's Protector System, which automatically reverses the garage door if an obstruction is sensed. The purchase includes two single-button remote controls as well as a Multi-Function Wall Control Panel.