Condition:NEW, 100% Good Quality Maximum Voltage:150 Volt DC Maximum Wattage:90mW Operating Temperature:-30 ~ +70 deg C Spectral Peak:540nm Light Resistance (10 Lux):5-10 Kohm Dark Resistance:0.5 Mohm 100λ10:0.5 Response time:30ms (Rise), 30ms (Down) Resistance Illumination: 2 size:5mm Light-dependent resistors or photoresistors 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. As the light on the sensor increases then the resistance across the two leads decreases. If you have a rear view mirror that darkens when its hit buy headlights you can check in the little hole on face of the mirror and you'll see those wavy lines of photoresistor! material:Metal colour:sier Package Included:20 x Light-Dependent Resistor Sensor Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.