It depends on the type you buy. If the transmitters are actually in the tire, which is most dependable like the ones on your regular driver, you have to break down and remount each tire. That will require a professional. If the transmitters are on the valve stems, you just screw them on. Also, if you have a Motorhome and a dinghy, you will need to install a signal booster. It’s easy to do but you may want somebody to install it.Silly question but the tire pressure monitor is it as easy as replacing the stem cap or does it take a professional to install?