0
Most can detect movement ten feet away, however some can detect twenty or thirty feet.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is the difference between a passive sensor and an active sensor?
active sensors are sensors that transmit some kind of energy ( microwave , sound , light , .... ) into the environment in order to detect the changes that occur on the transmitted energy . That means it transmits and detect at the same time . But passive sensors don't transmit energy but only detects the energy transmitted from an energy source, e.g. motion detectors which are mostly passive infrared sensors.
What is the definition a sensor?
Something that senses light, movement or sound
Why cant humans detect infrared light?
They can. While human eyes can not "see" infrared light, humans can detect this light as "heat" on the surface of the skin.
When was The Motion of Light in Water created?
The Motion of Light in Water was created in 1988.
Why is it necessary to detect radiation from space and not just light?
Light is radiation.
Is motion sensor can detect in very dark area?
No, it requires light within it's field of view whilst it requires physical mechanism to detect.
Why does motion sensor can't detect in very dark area?
Because motion sensors sense the movement of light, so if its dark, it cant see.
What is meant by sensor?
A sensor is a device that is used to measure something and record it. It can measure heat, sound, light, frequency, or motion and respond to it.
Wiring diagram for a 3way motion light sensor?
wiring diagram for a 3 way motion light sensor
What tools are needed to install a motion sensor light?
The following tools are needed to install a motion sensor light: 4-in1 screwdriver, voltage tester and a wire stripper. Also needed is a motion sensor light, elctricians tape and plastic.
What do you need to detect light?
this depends on the situation. normally all one would need is a thermal sensor in order to detect light
What is the purpose of compound eyes for grasshoppers?
Compound eyes detect motion, and simple eyes detect light. or The compound eyes are used to "see". The simple eyes are used to detect light intensity.
What is a way that a sensor can be used in a car?
Various ways. Infra Red sensors can be used for alarm systems to detect doors being opened or motion inside the vehicle. Sensors can be used in doors to detect when the door is opened, and trigger the internal light.
How many types of sensors in mobile phones?
Motion sensor/AccelerometerAmbient Light sensor
How sensors are used?
Sensors are used to detect things, such as motion, light, or color.
How do motion detector alarm systems operate?
Motion detector alarm systems operate by using light sources. A beam of light is aimed at the light sensor and anyone who passes causes the sensor to register.
What is the advantage of having a motion sensor light switch?
The advantages of having a motion sensor light switch are helping the environment and security for your home. Saving electricity helps save the environment, and a motion detecting light can help scare off criminals.
