Photoresistors are semiconductor photosensitive devices, in addition to having high sensitivity, fast response, consistent with the spectral characteristics and value of good features Under a high temperature, and humidity in harsh environments
it also can maintain a high degree of stability and reliability Wide pan used cameras, solar garden lights, lawn, detectors, clock, music, cups, gift boxes, mini-night light, light voice switches, lights automatically switch toys and a variety of light control, light control lighting, lamps and other light automatic opening control field
Operating voltage 3.3v to 5v
In the dark, their resistance is very high, sometimes up to 1MΩ, but when the LDR sensor is exposed to light, the resistance drops dramatically, even down to a few ohms, depending on the light intensity. LDRs have a sensitivity that varies with the wavelength of the light applied and are nonlinear devices. The module can also be used to measure light intensity and allows for easy sensing of light levels for you microprocessor projects.
