The liftmaster model MJ is a medium duty shaft driven opener. This opener is designed for commercial and industrial doors with either high-lift or vertical-lift track. Some door companies have installed these openers on standard lift track, but it absolutely is NOT designed for this application and will result in major door issues. Wholesale Door Parts will not warranty this opener when used on standard-lift track. It can operate doors up to 14’ tall and up to 200 square feet. With doors over 10’-14’ tall we recommend upgrading to the MH opener just below because it has a built-in chain hoist. The MT is designed to run up to 12 cycles per hour up to 30 cycles per day. It has a built-in remote-control receiver and can handle up to 20 remote controls, but remote controls are an add-on feature. It uses 315 mhz liftmaster remote controls and does not have wi-fi access. It comes standard with one 3-button wall station with open, close and stop buttons. It only accepts 115V wiring.