Smart Garage Controller Setup: before you call

One remote lives in a car you sold last spring. The other needs three presses from the driveway and its battery cover is taped on. Your phone is already in your hand when you pull in, and it would make a better opener.

Worth answering before the call

Is there a wireless or network symbol printed on the head unit? Is there an existing controller on the ceiling from a previous owner? Is there a spare socket in the ceiling receptacle the opener uses?

Can the door close itself at night?

Yes, with a schedule. You choose a time, and each night the controller sounds its warning, flashes its light and attempts to close the door if it is open; the close can fail if the beam is blocked, a sensor is faulty, or the controller is offline. Because it is unattended, the same safety rules apply: the door refuses or reverses if the beam is broken. Many households pair the schedule with a left-open alert so they hear about it either way.

What batteries does the sensor take, and how long do they last in a cold garage?

Most sensors take a coin cell or a pair of small cylindrical cells, specified by the maker. In a heated garage a battery commonly lasts a year or two; in an unheated one, expect less, and choose a lithium cell over alkaline because it holds its voltage in the cold. The app warns you as the battery runs down, and replacing it takes a moment and a fresh cell.