Had an alarm system installed in 2021 and at the time we specifically asked the ADT Rep what would happen at the end of the contract if we chose not to continue with the remote monitoring. They advised the hardware would remain ours (which is what you're really paying for like a mobile phone handset) and only the remote monitoring and use of the app features would cease. Our first concern was that one year into the contract we received a letter from ADT advising us that our system had been serviced which was surprising given no one had been round to the house and cleaned any devices or changed batteries. Instead, they remote monitored in, saw no faults and that was their definition of a service. At the end of the contract we decided not to continue for the price they were asking as we felt it was not value for money. Got home the day after the contract finished and the doorbell is flashing red as it's now not working. We managed to reset that and download the actual doorbell manufacturer app and got that working again. The app also stopped working so we can no longer see the cctv. we never managed to get that working again which we accepted. When we asked ADT for the admin code for the panel they installed they refused to provide it telling us we were no longer under contract. We had an independent engineer come over who told us that the default admin code for that model of panel had been changed deliberately on install. To add insult to injury when we were asking for the admin code, ADT then referred us to the T&C's (which you sign on a tablet by the way!) which stated under 11.6 ‘If the agreement ends, we may remove the system’ so the opposite of what we were told by the representative. I will never use ADT again domestically or commercially and if you do, be prepared that the moment you end the contract you are on your own and potentially they reserve the right to remove your system.