The Grove - Flame Sensor can be used to detect fire source or other light sources of the wavelength in the range of 760nm - 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy the sensor is sensitive to infrared radiation. In fire fighting robot game The sensor plays a very important role it can be used as a robot eyes to find the fire source.