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QusWhat is the primary use of an infrared (IR) sensor in IoT devices? QusIoT डिवाइसेस में इन्फ्रारेड (IR) सेंसर का प्राइमरी यूज़ क्या है?

A. Measuring temperature remotely
B. Detecting motion or proximity
C. Monitoring atmospheric pressure
D. Measuring light intensity


Solution
B. Detecting motion or proximity



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