Arduino KY-018 Photoresistor module, used to measure light intensity. It can determine the presence or absence of light. This module consists of a photoresistor and a 10 kΩ in-line resistor. The photoresistor's resistance will decrease in the presence of light and increase in the absence of it. The output is analog and determines the intensity of light.
||3.3V to 5V
MAKE iT WORK Basic Instruction Kit
Check MAKE iT WORK -KY-018 Photo Resistor Module for basic instruction.