I saw this TRÅDFRI motion sensor at my local Ikea. The staff member claims that this is the old model. It's much more slimmer than the current model and also the sensor
Tradfri button explanation for E1745 Motion Sensor? - Devices & Integrations - SmartThings Community
How to reset your TRÅDFRI motion sensor - YouTube
Dimension mock-up for Ikea Trådfri motion sensor by Petri | Download free STL model | Printables.com
Ikea TRÅDFRI TRADFRI Wireless Motion Sensor, White LATEST 603.776.55 - NEW | eBay
Tip: Cheap HomeKit motion detector for outdoor use