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
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TRÅDFRI Wireless motion sensor, smart white - IKEA
TRÅDFRI Wireless motion sensor, smart white - IKEA
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Dark" attribute on tradfri motion sensor : r/homeassistant
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Ikea Trådfri Motion Sensor – Homekit News and Reviews