DESC: System Includes: Main Control Unit program Up To 5 Emergency Telephone Numbers To Call When The Alarm Is Triggered compatible With Up To 14 Additional Wireless Accessories For Expansion 105 Db Alarm ac Adaptor Included Wireless Door/Window Sensor With Alarm activates Alarm When Triggered By The Door Or Window Opening wireless Transmission Up To 300 Feet 9 Volt Battery Operation (included) Wireless Motion Detector Sensor detection Range Up To 8 Yardsdetection Angle Up To 110 Degrees wireless Rf Transmission Up To 300 Feet 9 Volt Battery Operation (included) Remote Control arm/disarm System Easily panic Button Feature Plus: Instruction Manual And Step-by-step Dvd.