Here is a security kit that helps you keep a closer eye on your home. The Korner Home Security Kit comes with a fob that connects to your router and a tag or door/window sensor, allowing you to add up to 22 more tags. It lets you arm or disarm the system from anywhere. The system has a range of 100 feet without an extender.
You can invite your friends and neighbors to become a part of your security circle. Tags are easy to install and have 2 years of battery life. More information is available here.