Chamberlain 5580
Powerfull low cost operator with automatic-learn force sensing, external mechanical limit adjustments, rolling code technology, energy saving transformer, quick-connect wire terminals, logic board with diagnostics, 1-light* 230V/40W with 2.5 minute adjustable light delay, antenna, door-in-door and flashing light connection. Specify operator head and 30mm chain steel C-rail separately.