I have been dealing with Lowitt Alarms Security Alarms since 1997, I an very satisfied with there service, I had a problem 4/5/24, I could not shut off the alarm, after calling Lowitt and following directions I was not able to shut off the alarm, I was told that the next appointment for repair would be tomorrow, I explained the we are seniors and please see what you can do, Linda, was able to made some adjustments and a repair person came to our home at 4Pm and put a new battery and radio, I highly recommend Lowitt Alarms to any one who is shopping for a Security System