This book proposes a temperature sensor system that can assist in early detection of forest fires one of the most dreaded natural disasters on the earth. The main idea presented in this project is to utilize RF antennas with sensors as disaster alert. The devices used in this system are automated embedded system consists of microcontroller, LCD, ADC, buzzer sensors that measure the temperature and transmit the location of the receiver access points for wireless communication and a central monitor system. The system method can be defined as thermal detection (TD): the access points get the temperature values from the devices and send the data to a central computer to check for instant changes in the temperatures. The book is brief and well written to manage the various types of fire hazards that may occur due to one reason or other, the readers can design their own fire prevention system by using this book. All references and coding have been mentioned in detail