This document summarizes a 3D project that uses sensors and a relay module to monitor temperature and proximity. It includes an introduction to the project, descriptions of the algorithm using an ultrasonic sensor and infrared thermometer, code and function details, information about 3D printing an enclosure, images of the final product, and a demo section. The project senses distance and temperature, and can power off a relay module if the temperature reaches 70 or 90 degrees Celsius, or an object gets within 30 centimeters.