Photo-Resistor Sensor (LDR or Photo-cell)

From the shop's description

This is a very small light sensor . It is called light sensor or photocell or LDR (light dependent sensor) or photo-resistor. A photocell changes resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something). Features Light resistance : ~1k Ohm Dark resistance : ~10k Ohm Max voltage : 150V Max power: 100mW Dimensions 2 x 4 x 5mm 4mm between pins 31mm lead length What is LUX and what LUX value for diffrent light conditions, Click here For LDR (light dependent resistor) datasheet and tutorial, Click here For GL5528 photo-resistor datasheet, Click here