The control is highly recommended! The unit is very compact (size of a junction box) and offers all the features you need. Installation is simple and the programming only takes a few seconds. The transmitters are small and very good quality. The coverage is good enough. It is controlled via a 2-channel system, a button for Up and one for Down button where you can stop the door at any time. The same works the same on the button and be connected or key switch. The garage lighting can be connected, where the duty is entered when programming the same time. Fazid: A quality product for an unbeatable price.