Object Monitor Timer is a system designed to check if an object stays near the device during a set time period. The system uses a sensor to detect when an object is placed near the device and starts a countdown timer. While the timer is running, the remaining time is shown on an LCD display so the user can easily see the system status. If the object is removed before the timer finishes, the system activates a buzzer alarm to notify the user. The system is built using an ESP32 microcontroller, which controls the timer, reads the sensor, updates the display, and activates the buzzer. A distance sensor is used to detect whether an object is present near the device. The LCD display communicates with the ESP32 through I2C communication to show messages and the remaining countdown time. Buttons are used so the user can select timer settings and adjust brightness levels. One of the main accomplishments of the project was successfully connecting the sensor, microcontroller, display, and buzzer into a working system. One challenge during the project was making sure the sensor detection and system response were reliable. Future improvements could include adding wireless control, more timer options, and improving the enclosure design.