1) The document presents a home locker surveillance system without using CCTV cameras. It uses a PIR sensor, ultrasonic sensor, Arduino microcontroller, motor driver and actuator to detect intruders and instantly catch thieves.
2) When the PIR sensor detects an intruder, it sends a signal to the Arduino which activates the motor driver. The motor driver then activates an actuator that presses a chloroform unit, knocking out the thief.
3) An exhaust fan is also activated to clear the chloroform from the area after a minute. The system sends an SMS notification to an authorized user for low cost and low power surveillance without CCTV cameras.