Roboway 10Pcs Photoresistor Photo Light Sensitive Resistor Light Dependent 2mm LDR Electronic Components Electronic Hobby Kit

"Photo resistors, also known as light dependent resistors (LDR), are light sensitive devices most often used to indicate the presence or absence of light, or to measure the light intensity. In the dark, their resistance is very high, sometimes up but when the LDR sensor is exposed to light, the resistance drops dramatically, even down to a few ohms, depending on the light intensity. LDR has a sensitivity that varies with the wavelength of the light applied and is nonlinear device. They are used in many applications but are sometimes made obsolete by other devices such as photodiodes. Specification? Type:GL5539 Max voltage(VDC) :150 Max power dissipation(mW):100 Ambient Temperature?C):-30~+70 Peak wavelength(nm):540 Light resistance(10Lx)(K?):50-100 Dark resistance(M?):5 Gamma Value ( ) at 10 ~ 100 Lx:0.8 Rise Response Time(ms):20 Fall Response Time(ms):30 Illuminance resistance characteristic:5 Body Size:5 x 4 x 2mm(L*W*H) Wire size:35mm Package Content: 10 x Photoresistors"