To construct a remote controlled prototype of a fire fighter robot that can fire extinguisher. In this project, we use sprinkler system that is controlled depending on the surrounding temperature. It is a versatile project with application in almost every place, be it residential or industrial. This is deign in two parts one is remote and other is rover along with fire extinguisher. Remote has four switches for driving the robot in forward, backward, left and right. When rover is at fire position, then fire sensor (DS18B20) detect the fire (specific temperature) and signal given to the microcontroller, microcontroller show the temperature on 16*2 LCD and simultaneously energize the relay and then water motor is on. When temperature is below specific level then water motor is off automatically. The on/off action of water motor is automatic and depends on temperature. Full working is shown in block diagram.