Now a days, Home Security threat is the most challenging task in our life. To overcome this threat, our houses must be Smart. This paper gives a solution to overcome the Home security threat. Using Zigbee network enabled digital technology, we can make our home Smart and secure. The technology gives us the opportunity to increase the connectivity of various devices hence we can get an overall security solution. Moreover, as the area of Internet is widening, we can remotely control and monitor the network enabled devices. The device can also send signal to the remote person whom we want to notify about the threat. Common gateway is used by both the Zigbee security system and Wi-Fi network for integration purpose. The use of this system would be user-friendly, flexible and cost effective. This system will based on Zigbee network. Hence, the hardware required would be Zigbee Modules, Micro-Controller (ATMEGA168), Relays, Voltage Regulator and various sensor devices. In this method, The sensors will sense the threat and send signals to the micro-controller through Zigbee network and the micro-controller would take appropriate action and send signal to the remote location on the reception of threat signals. Zigbee technology is simple, flexible and very reliable to use. It is broadly used transceiver standard. It has low data rate and consume low power. It’s operational range is in between 10 meters to 20 meters but can be extended upto 150 meters by the use of direct sequence spread spectrum (which is quite well for the purpose of a home).