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- An LDR is a light sensor
- This means it automatically regulates the amount of light intensity on it or activates a device when the light intensity reaches above or below a certain point
- Therefore, LDRs are found in:
- Lights that switch on when it gets dark (eg. garden lights, street lights)
- Alarm clocks
- Burglar alarm circuits
- Light intensity meters
- Security lights
- The main advantage of an LDR is that these circuits are automatic therefore not needing any human time and intervention to function correctly everyday
