These motions do not have an occupancy setting according to the installation instructions. And my limited research indicated that the dual tech reduces the false alarm rate from single technology detectors well (although I am certainly no expert in this area). There were no insects of any kind (and they would have to been in all four detectors that were false alarming if they were the cause). The area they cover is approximately 100'ft by 70'. The motions theorectically cover 50' at the furthest point (according to their specs), but I tested them and they exceeded their specs. For example, they would detect motion at each door 70' accross from each other. I do believe they could have been interfering with each other, causing the false alarms (ie the sensitivity on three may have been too high, and they were pointed at each other with a small offset). But the false alarming didn't change when I lowered the sensitivity, although I suppose I could have lowered the sensitivity further and tested them again.
What bothers me most is that they didn't consistently false alarm. If they did it would clearly support the idea they may have been interfering with each other. But the fact that they didn't false alarm at first, then did, stopped, and then started false alarming again implies something environmental (Although admittedly I'm clueless as to what that might be). Anyway, I installed different motion detectors and now experience no false alarms at all.
These motions do not have an occupancy setting according to the installation instructions. And my limited research indicated that the dual tech reduces the false alarm rate from single technology detectors well (although I am certainly no expert in this area). There were no insects of any kind (and they would have to been in all four detectors that were false alarming if they were the cause). The area they cover is approximately 100'ft by 70'. The motions theorectically cover 50' at the furthest point (according to their specs), but I tested them and they exceeded their specs. For example, they would detect motion at each door 70' accross from each other. I do believe they could have been interfering with each other, causing the false alarms (ie the sensitivity on three may have been too high, and they were pointed at each other with a small offset). But the false alarming didn't change when I lowered the sensitivity, although I suppose I could have lowered the sensitivity further and tested them again.
What bothers me most is that they didn't consistently false alarm. If they did it would clearly support the idea they may have been interfering with each other. But the fact that they didn't false alarm at first, then did, stopped, and then started false alarming again implies something environmental (Although admittedly I'm clueless as to what that might be). Anyway, I installed different motion detectors and now experience no false alarms at all.