Smarthome's SecureLinc Wireless Home Security System is a full-featured, customizable security alarm system that connects in a fraction of the time of hardwired systems and includes everything you'll need to get your home security started. Just plug the main unit in to power and a phone jack, mount the wireless sensors in the zones you want to protect, and you're ready to program the system. The Smarthome SecureLinc Wireless Home Security System supports 28 wireless zones and two hardwired zones with the ability to record up to 100 events in its internal log. The kit includes two four-button wireless keyfobs, three wireless magnetic window/door contacts, and two 85-Pound Pet Immune Wireless Motion Detectors.