Hi, hope someone can help us with out security light. We're really at our wits' end with it. It keeps coming on for no apparent reason. First thing I did was to check for anything moving, but couldn't see anything. There was absolutely no wind that night, everything was completely still. We considered the possibility of the nearby boiler flue being the cause, but it often triggers when the boiler is off. So we tried covering the left side of the sensor. The problem continued, leading us to believe it was picking something up on the right. So then I tried covering the right side of the sensor, but the problem still continued. I also tried covering up the nearby water butt, as I have heard that pools of water can cause false triggering. Again, no change. Next I wondered about electrical interference or a fault with the sensor, so covered the entire sensor. This time the false triggers stopped. So I think we can safely assume that the sensor is definitely seeing something, but the question is what? I've also now adjusted the light position as there was some heat radiating from the bulb towards the sensor, and covered the top half of the sensor, which covers long range detection. Last night this seemed to have cured the problem, but tonight it has returned. So now we're pretty much out of ideas. Has anyone got any other suggestions?