Amazon offers the Eve HomeKit Motion Sensor for $39.95 shipped. That’s good for a 20% discount from the going rate and a new Amazon all-time low. Eve’s motion sensor works without a hub, features IPX3 water resistance, and is compatible with HomeKit. It connects over Bluetooth, so if you plan on placing it in a room far away from your HomeKit hub, it might be worth looking into a non-standalone option like Hue’s motion sensor. Reviews are still coming in, but other Eve HomeKit devices are highly-rated.