Recently I purchased a Chamberlain B1381T Smart Garage Door Opener. This is a belt drive opener that is equipped with battery backup. I am extremely pleased with this purchase. The Chamberlain belt drive is much quieter compared to my former screw drive opener.
When I purchased this opener I was fully aware that the Chamberlain and LiftMaster garage door openers were intended to be controlled via the MyQ app and were therefore not supported by SmartThings. However, I was hopeful that I might be able to get it to work with SmartThings.