[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

毫米波雷达精度越高(60GHz)越贵且功耗大,多需外接供电不能纯电池长续航;PIR功耗极低可电池供电用1-2年,纯过道场景PIR性价比远高于雷达

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