Gizmodo Follow Aqara Multi-Sensor FP400 Review: Not Quite the mmWave of the Future Aqara still makes the best mmWave presence sensors around, but the FP400 doesn’t improve much on its predecessors. https://gizmodo.com/aqara-multi-sensor-fp400-review-not-quite-the-mmwave-of-the-future-2000804454 gizmodo.com
