COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Motion sensor
|
|
|
Temperature / heat sensor
|
|
|
Moisture sensor
|
|
|
Humidity sensor
|
Detailed explanation-1: -The PIR sensor gets power and it detects the IR rays emitted from any intruder who is passing over there. Usually PIR sensor can vary upto works in a limit of 5 meters.
Detailed explanation-2: -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-3: -The Intruder Alarm Sensors PIR sensors work by detecting infrared light. This infrared light is given off by a moving object or person that emits heat.
Detailed explanation-4: -The most common type of active motion detector uses ultrasonic sensor technology; these motion sensors emit sound waves to detect the presence of objects.