I work in a construction company. We create projects of modern houses for people who do not want to buy an old one or to make it unique for themselves. Now I am working on a project with a smart home system. It needs different sensors to close and open the door, fire and flood detectors, sirens. It is supposed to be controlled from an app, which must be very clear in use. I have found Ajax security systems. It seems they do exactly what I need, but maybe you can recommend me any other varients. I want to analyze and compare all of them.