What are light sensors used for?
Others answers (2)
- eAnswers...Jun 29, 2014
Light sensors can be used in burglar alarms. The light shines between the sensors and if something interrupts the light, then the device knows an object is there. Light sensors are also used in street lights. Sensors determine when it's dark and switch on the lights automatically. In case of burglar alarm, the light sensor senses a beam from the other part of the alarm. If a person or objects come in the way of the beam, the sensor gets activated and immediately sound the alarm. There are many other things in which light sensors are used like bar code scanners, garage door openers.
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