When the detector is first turned on wirelessly there is a false detection briefly until the rail starts cycling. I found this when retrofitting this new unit into where my old large style detectors were and began logic testing. To fix this I had to add in a row of blocks on the rear side to delay a safety interlock disabling, which increased the overall dimensions to 6L 4W 6H. Otherwise if you link this to a swarm missile launcher then it will fire automatically when you start the detector which could be very bad. You probably want this rear area open for linking the wireless circuits anyway. Since there was now spare room for a block or two a flight camera was added.