This document discusses a survey of motion detection systems for security using IoT. It begins with an abstract describing how intrusion detection systems with alarm systems have become necessary due to frequent burglaries. It then discusses how motion can be detected using devices that detect changes in speed, vector, or environment. The project discussed uses a PIR sensor coupled with a microcontroller to detect intruder motion and activate an alarm. It also reviews related works involving using sensor networks and deep learning models for motion detection, comparing performance of different motion detectors, PIR sensor-based security systems, and adaptive background removal for motion detection in video surveillance. It concludes that a modular home security system communicating via phone call could be useful for homes, businesses, and