DO NOT USE ALDER
This system is bad and I wouldn't recommend it. The system started out working fine, and then slowly devices started to fail. I had to pay for a replacement control panel, and they sent the wrong one. The updated panel had different firmware which didnt work with the glass break sensors, and I haven't received my replacements. The smoke detector has been another point of failure, and I'm on the verge of canceling (if I can).