This is the second part of Internship Report “Security Watching All the Time”. Security monitoring system is used all over the world to ensure the security of our family and valuables. Still now security assurance is a curse for our country. Available security systems are not user friendly and affordable enough for every class to maintain. Hence we designed a security monitoring system based on PIR sensor which is affordable and at the same time flexible enough to purchase.So if anyone intends to have a secured system, the one that we designed is one of the most efficient one, with prompt response without any delay.