I actually installed SimpliSafe yesterday. It uses a cellular signal, has battery back up, and is wireless. For $15/month they have monitored service, but you don't have to use it, you could just use as an audible alarm. For $25/month, you get the text alerts and remote arming, so I can set the alarm from my mobile now if I forget. I liked that I could make it as ridiculous a system as I wanted, I added glass break sensor, water sensor, freeze sensor along with fire, motion, entry sensors. I can also add more as they expand the system, think they are adding cameras soon, and you buy it so I can take it with me if I sell my house, attached with command strips so easy to remove the sensors. I liked the Panic button on the bedroom wall, but since it is wireless, you could easily put it under your poker table if you needed one there, or get 2 or 4 or 10, whatever you need. Just have to hold it for 2 seconds. Only thing I am not happy with was the "yard" sign, which was a sign, but nothing to put it on, need to get a stake at Home Depot.
I already had cameras, but wanted a networked alarm as well. If you want a "refer a friend" discount, PM me your email.
Call me paranoid, nothing wrong with a bit of caution.
BiGGyT
I have SimpliSafe at my business - it is great. I use the sensors to monitor my controlled drugs. You simply attach the sensors on cabinets and drawers and get text alerts if they are opened. I'm sure you could use the sensors on a birdcage of chips to monitor if it is moved.