12mm GL12528 Light Sensitive Photoresistor LDR (Pack of 2pcs)

The resistance of 12mm GL12528 Light Sensitive Photoresistor LDR changes with the change in the ambient light exposed on the surface of the sensor. As the light on the sensor increases then the resistance across the two leads decreases. Light Dependent Resistor is a type of photocell which finds excellent use in light sensing device application, whether it is automatic outdoor light ON/OFF switch or indoor automatic light switch; moreover, the 12mm LDR or photoresistor sensor works best in both light and dark regions. The photo-resistors are a staple of electronics. If you need a way to sense the level of ambient light then there is no easier way to do it without an LDR/photo-resistor.
Two Cadmium Sulphide PhotoConductive Cells with spectral responses similar to that of the human eye. Cell resistance falls with increasing light intensity. Applications of this product include smoke detection, automatic lighting control, batch counting, and burglar alarm systems. Furthermore, some of the applications are given below.
 
 Analog Applications:
Camera exposure control
Auto slide focus – dual cell
Photocopy machines – the density of the toner
Colorimetric test Equipment
Densitometer
Electronics scales – dual cell
Automatic gain control – modulated light source
Automated rearview mirror
 
Digital Applications:
Automatic headlight dimmer
Nightlight control
Oil burner flame out
Streetlight control
Absence/presence (beam breaker)
Position sensor
 
Other applications:
Annunciator
Camera automatic photometry
Electronic toy
Industrial control
Light control
Light control lamp
Photoelectric control
Switch
 
Features:
Spectral peak: 560nm
Maximum voltage: 250 VDC
Maximum wattage: 200 mW
Operating temperature: -30˚C ~ +70˚C
Light resistance (10 Lux): 10-20 KΩ
Dark resistance: 2 MΩ
Resistance illumination: 3
Response time: 20ms (Rise), 30ms (Down)