This company is the greatest. I have had this alarm for years with virtually no problems. Recently I had to go into the hospital for surgery and as luck would have it the day before one of the door transmitters went bad. Not wanting my wife to have to hassle with bypassing the transmitter every time she came to the hospital, I called Reb and he was out the same day to take care of the problem. He was prompt, professional and courteous. I would never swap this company for one of the larger ones. Am sure I wouldn't get the class of service from them as I get from Reb nor as good of price on his service.