Wireless security systems for home use small transmitters of signals instead of wires to communicate between the control panel and the sensors placed in the doors and windows. They are very easy to install and have all the provisions given in a wired security system. The only major limitation in the wireless security systems is the distance the devices are able to communicate. The wireless devices should not be placed near any other electronic devices because it may create some disturbance. Installation process is done by the companies themselves for this type of systems also. But it is so easy that we ourselves can do it. This advantage makes it more suitable for people who live in rented houses. They can take the entire set of system to the house they are occupying and install it themselves easily. But they have to bear with changing the batteries, when it becomes low, but this cost and time is low when compared to taking a wired system from house to house. They also come with other accessories like the water detector, fire alarm, smoke alarm, etc. which is advantageous. There are several advancements coming day by day in these systems that new accessories are added to provide more functions. Now they include cameras and recorders for catching the pictures and sound.