Light dependent resistors are two cadmium sulphide (cDS) photoconductive cells with responses similar to that of the human eye. The cell resistance falls with increasing light intensity.
Solid-state photosensor that uses photoconductivity to lower resistance value when irradiated with light Ceramic package with sensitivity up to 690 nm TO-5 and TO-18 packages Suitable for use in applications like street light auto-flashers and camera light metres
Applications
Applications include Smoke detection Automatic lighting Control batch counting Burglar alarm systems