Whole House Security System

Wireless and wired line of sight alarm system. Comes with; Control Center, Alarm Siren, Motion Sensor, Silent Alert, Window Door Sensor and Garage Door Sensor. I purchased all these items one at a time and they have been used only once or not at all. I live on in a third floor apartment and without the Signal Repeater the signal strength is too weak to function every time. Line of sight is required for optimal functionality without the Repeater. It's a great system, just not for my purpose.