When we first moved into our Florida apartment, there was a security system in it. All of the windows and doors were part of it, along with an emergency push-button device that was connected to the wall in the master bedroom. The windows/doors were on a security pad on the wall next to the front door. The system was still in the apartment, but only worked inside. A "whistle" alarm went off inside if a door or window was opened when the system wasn't shut off. We used the "inside alarm" quite often, especially if we knew we be gone on vacation or nighttime. We really miss the alarm and are thinking of getting a wireless motion detector (1) from Best Buy for $80. It can be sit anywhere, is connected by WiFi to a cell phone and records in 720p video. If the camera picks up any "motion", within the camera's path, it will alert our phone and begin the recording. We can also connect to the detector, by cell, and see the inside of our apartment (from the camera lens). Do you have any kind of in-home security? How does this system sound to you. It does get very good reviews.