COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Temperature
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Humidity
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Movement/Motion
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PH
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Detailed explanation-1: -Infrared (IR) Security Sensors Infrared sensors utilize infrared light to detect motion. In a security system, that motion triggers an alarm, turns on lights, or sends an alert. There are, however, two different types of infrared sensors commonly used in security devices ― active and passive infrared sensors.
Detailed explanation-2: -There are two widely used types of motion sensors: active ultrasonic and passive infrared (PIR). Active ultrasonic sensors and passive infrared sensors are the two most common motion sensor technologies, both of which are known for their accuracy and reliability.
Detailed explanation-3: -An active ultrasonic motion detector emits ultrasonic sound waves that reflect off objects and bounce back to the original emission point. When a moving object disrupts the waves, the sensor triggers and completes the desired action, whether this is switching on a light or sounding an alarm.
Detailed explanation-4: -The most frequently used motion sensors are Passive Infrared (PIR), Microwave, and Dual Tech/Hybrid.