ITEM NAME:1PC Photoresistor Sensor Module Light Detection Light for Arduino NEW CC 1PC Photoresistor Sensor Module Light Detection Light for Arduino NEW CC #aucsearchbutton #aucsearchbutton:hover { cursor: pointer;., Using sensitive photosensitive resistance sensor. 2,The comparator output signal is clean, good waveform, driving ability, more than 15mA. 6,A fixed bolt holes for easy installation. We will reply you ASAP.