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PIR是什么意思

Passive Infra Red 中文解释
英文缩写 PIR
英文全称 Passive Infra Red
中文解释 电红外传感器
缩写分类 电子电工
缩写简介 "Passive Infra-Red" (PIR) detectors are used in burglar alarm systems, and to control the security lighting that many people have fitted outside their houses.