DESCRIPTION
Photoresistor is a special resistor made of sulfide septum or selenide septum semiconductor material, its working principle is based on the internal photoelectric effect. The stronger the light, the lower the resistance value, with the increase in light intensity, the resistance value is rapidly reduced, the bright resistance value can be as small as 1KΩ or less. The photoresistor pair is as small as 1KΩ or less. Photoresistor is very sensitive to light, its in the absence of light, was a high resistance state, dark resistance can generally reach 1.5MΩ.
Features
1. Small size
Fast reaction speed, high safety, long life time
2.Stable performance
High sensitivity, epoxy resin package, good reliability
Applications
1. Light control: Photoresistors can be used to automatically adjust the brightness of a lighting system, such as automatically turning on street lights or adjusting indoor lighting at night.
2. Light Measurement: Used in cameras for light measurement or in weather stations for measuring sunshine time.
3. photosensitive circuits and photosensitive sensors: used as light control switches or photosensitive alarm devices to realize light control and light sensing functions.
4. Automatic door control: automatic doors in public places are equipped with photosensitive resistors to trigger the opening and closing of the door by sensing light changes.
5. Camera Exposure Adjustment: When taking photos or videos, it helps the camera to sense the light intensity in real time and realize automatic exposure adjustment.
6. Street light control system: Automatically control the switch of street light by sensing the change of light during day and night to realize energy saving and environmental protection.
7. Camera electronic shutter: using the characteristics of the photoresistor to control the speed of the shutter.
8. Fire alarm: In the fire alarm system, the photoresistor can detect the light scattering caused by smoke, thus triggering the alarm.
9. Banknote Examiner: Using a specific wavelength of light to irradiate a banknote, the reflected light is detected by the photoresistor to identify the authenticity.







Please allow minor error due to manual measurement. Thank you!
Due to the difference between different monitors, the picture may not reflect the actual color of the item.

