Leaderboard

Most external sirens are compatible with each other but using the same brand as the panel will mean the terminals are named the same and you may get better feature compatibility. Regarding PIR's they are the elements within the pyro. A quad has a better sensor and lens arrangement dividing the detection area into four elements that all need to trigger together. For a great explanation I always point to this video. Bear in mind it's only explaining a basic PIR not a Quad. You could buy sensors years ago with twin dual element pyro's side by side. So cheaper here then...

They just want to throw it in and charge extra for the service and batteries. It's sad some of the industry has been going that way... Would be a nice job to wire with the boards up already. Wireless does have it's place but I'd always wire as much as I can. Keypads and Bells are always wired on my systems even if much of the detection is not. Texecom isn't as open to DIY as it was, especially on the Premier stuff. Veritas is a DIY only product now I'd say tho. I would wire a single 8 core to everything, but a single 6 core to everything would likely be fine. I just like having spare pairs for the future. Then see if you can find a company that will use your wiring.