This document describes an advance ATM security system that uses various sensors like IR sensors for motion detection, a servo motor for closing and opening the cabin gate, an LCD display, and an alarm or buzzer for alerts. The system aims to improve ATM security and make it safer to use by monitoring for unauthorized access or tampering. When motion is detected or more than two people enter the cabin, the door will automatically close and an alert will be sent to the nearby police station via messages displayed on the LCD. The system uses a Node MCU microcontroller to process sensor data and control the components.