Re: how to use an existing motion dector and glass sensor with xfinity home?

I have added additional sensors and siren by myself. I got them from ebay for super cheap. My sensors are visonic and siren is from SMC. You need to make sure the sensors are compatible with your system. Once they are compatible, you can reset your existing sensor to factory settings and add them to your panel. Instructions are available widely, just google it. I am not sure if I can give instructions here