Abstract: Nowadays robots are incorporated in the job which are often difficult for humans and these robots can be used as an effective alternative for humans.Mobile robots have become a significant topic in the security field Several techniques have been introduced to work with mobile robots and security. Most of these methods are not capable of working in low visibility environments and need to be manually controlled by a person all the time. In this smart security system, a mobile robot acts as an e-patrol in both light and dark environments. The design and implementation of mobile robots consist of three subsystems: The obstacle avoidance,image capturing and alarm indication for theft prevention.By means of which bot can be deployed for surveillance in a defined path with specific intervals.