Unverified85% confidenceDecision RuleTime unknown
PIR红外人体感应只能探测移动的温度物体，静坐或缓慢动作会导致误熄灭；需要在书桌、沙发等静止场景用，应选微波雷达感应或带手动常亮档的产品
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85%
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Long-term
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UnverifiedPIR红外人体感应只能感知移动的温度体，静坐或缓慢移动会误灭；如需长时间停留（如厕、哺乳）应选微波雷达感应或带手动常亮档的型号91% similarUnverifiedPIR被动红外传感器只能感应移动的热源，人静坐不动会被误判为无人而熄灯；卫生间、书房等久坐场景应选微波雷达感应（可穿透玻璃/薄板检测微动），或PIR+雷达双模方案87% similarUnverifiedPIR被动红外传感器对静止人体不敏感，只能检测移动物体，若需检测长时间静坐场景（如书房、卫生间久坐）应选择雷达式（毫米波）传感器或PIR+雷达双模融合方案85% similarUnverified红外(PIR)感应只对移动的热源(人体)敏感，人静止不动超过延时时间会误关灯；办公桌、卫生间马桶等久坐/久站场景必须选微波(雷达)感应或红外+微波双技术84% similarUnverified人体感应（PIR红外）只对移动的温差敏感，静止不动会熄灭，不适合久坐场景；微波雷达感应可检测静止微动但功耗略高、易穿墙误触发83% similar
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