Mi Motion Sensor

If you own any Zigbee devices, you may already be aware of how fast they respond in general, and in the case of the Mi Motion Sensor, it’s no different. They’re easily as fast as the Hue Motion Sensor, which also uses Zigbee, and it really tends to leave Bluetooth motion sensors in the dust. As with the Aqara sensors, these are quite sensitive and seem to have quite a long reach in terms of how far away motion is detected, which could be a blessing or a curse, depending on the situation.
Installing this device is done either via the Mi home or Aqara apps and if you want it to be exposed you’ll need to have the Aqara hub to do so. I’ve been through the process of adding devices to both these apps elsewhere, so I won’t repeat it all again, but if you refer to my review of the Mi Door and Window Sensor, the procedure is exactly the same. Needless to say, in essence, you add it to the Mi Home app, it gets added via the Aqara hub (which is required), and it automatically appears in your Home app. In the process of adding the device, you will be asked to choose a room for it, but this will not be carried over to the Home app, so you’ll need to assign a room in the Home app too.
I’ve already mentioned that, as this is a Zigbee device, you do need a hub to make it work, regardless of whether you use Apple HomeKit or not, so if you’re just using the Mi Home app, you can add it via one of the older Mi Gateway’s to make it work, but for HomeKit, currently you need the Aqara hub.