If you want the added security of being able to detect a fire in your home, you need the Fox Guard Detect. Complete with a smoke detector, it also comes with mini door/window contacts, motion sensors, and a keyfob.
1 Lynx Touch 5210 All-In-One Keypad, Siren, Backup Battery, and Alarm System
2 Motion Sensors
6 Mini Door/Window Sensors
1 Smoke Detector
1 WiFi Communicator (subscription required)