Electronic Supply by Industrial Electronics in Milwaukee Wisconsin : Potter Brumfield, Radio Shack Stores in Milwaukee: ARDUINO™ TINKERKIT LDR SENSOR - NEW! ARDUINO™ TINKERKIT LDR SENSOR - NEW! ================================================================================ synscon on 20/06/2016 05:38:00 ARD-T000090 LDR (or Light Dependant Resistor, or photoresistor) is a variable resistor. Light falling on the sensor decreases its resistance. All registered trademarks and trade names are properties of their respective owners and are used only for the clarification of the compatibility of our products with the products of the different manufacturers. Due to constant product improvements the actual product appearance might differ from the shown images. Product images are for illustrative purposes only.