At the beginning of this episode, we see that the house has no alarm pad by the front door. Bernie Mac decides to get one later in this episode, but yet in future and past episodes we see a different one by the door.
Bernie Mac: The last thing I want, kids, is somebody ending up killing you -- before I get a chance to.
Bernie Mac: How's somebody going to just come up in my house? It's disgusting, despicable. What the ...., what's wrong with people today? You're supposed to rob someone when they're not at home. I gave him all the signals I was here: lights on, truck's in the driveway, I'm talking to myself out-loud! What more do I need to do, meet him at the door with a hot toddy?