LDR 5 mm Photo Resistor

Quick and simple start guide for using and exploring the Rain Sensor module sometimes called a “Raindrops Sensor Module” with an Arduino.

This module is sensitive to the flame and radiation. It also can detect ordinary light source in the range of of a wavelength 760nm-1100 nm. It can be used as a flame alarm or in fire fighting robots.

4-way Infrared Tracking Sensor Module