Wired security systems for home require electrical wires that connect the control panel and the keyboard with the sensors placed in the doors and windows, motion detectors and .the cameras. The wiring is usually concealed in walls. It just requires minimum knowledge for installation, but still it is better to do it with a professional installer so that we need not spend time for getting the tools. Wired security systems come in open and closed loop configuration. But for a security system used in home, we generally go in for a closed loop. In this type, when the door opens, the circuit becomes incomplete and the alarm sounds. The major advantage in this type is that the thief generally will try to open the windows or cut the wires in the sensors which will automatically break the circuit and sound the alarm. Generally people who live in their own houses will have this type of wired ones because they can have the permanent wiring and have their maintenance done annually. Battery need not changed as in case of wireless one, and since they are in their own house they can use the mains instead of batteries without any limitation. Wired systems are used since long, and trusted by many people.