OCTOPUS Flame Sensor is a module based on the infrared receiver (IR probe) simple in design light convenient very sensitive. It can be used to detect the source of fire make a simple fire-fighting robots produce fire alarms and so on. Note that the infrared sensor operating temperature is generally from -25 degree to 85 degreetherefore in order to avoid damage in the process of use maintain suitable distance from the flame probe to the flame not too near. Three pins electronic building blocks interface: input 5V-GND. S for signal output. - Adjustable sensitivity (shown in blue digital potentiometer adjustment) - Output type: Digital switching output 0-1 - Power supply needs: 5V - Interface type: Analog - Pin Definition: 1-Signal 2-VCC 3-GND - Fast response and High sensitivity - Simple drive circuit - Stable and long life