Chamberlain 0.5-HP Chain Drive Garage Door Opener Chamberlain® is the most trusted brand of garage door openers, designed with the safety of your home and family in mind. Perfect for detached garages, the C2102 is a hardworking and reliable opener that includes: Drive Type: Long-lasting chain drive Trusted security: Security+ 2.0 technology provides unmatched encryption (100 billion codes) BILT® Intelligent instructions: 3D instructions for a quick, easy installation Additional features: The opener also comes with one 3-button remote, push-button door control and safety sensors Additional assurances: 6-year motor warranty, 1-year chain warranty, 1-year parts warranty, 1-year accessories warranty Perfect Fit: Designed specifically for 7-ft garage doors - extension kits required for 8-ft (8808CB-P) and 10-ft (8810CB-P) doors