All Electronics stocks a variety of components that can be used to detect light. CdS photocells, or photo-resistors are light-dependent resistors that change their resistance in proportion to the amount of light they are exposed to. We also have a photo-detector module that is a miniature photovoltaic or solar cell that can be used to detect light. For other light detection components, see photo-diodes and photo-transistors as well as infrared devices.
