this post was submitted on 07 Jan 2025
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Aqara Unveils New Presence Senr at CES 2025 - SmartHomeScene (smarthomescene.com)
submitted 5 months ago by tifriis@sh.itjust.works to c/homeassistant@lemmy.world
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[–] asbestos@lemmy.world 4 points 5 months ago* (last edited 5 months ago)

“As the mmWave sensor enters a low-power state when no motion is detected, it allows the Aqara FP300 to have a 2 year battery life while being powered by a pair of button cell CR2450 batteries.”

Reading through the marketing bullshit since this is the only number mentioned: It’ll last 2 years if there’s nobody ever in that room. In reality, it’ll last a few months at best and probably less than that if there’s people constantly in the room, as the mmWave sensor will need to be powered non-stop.