FeaturesCustomizable security: Add more sensors to your system anytime.Cover up to 1,500 ft. range without using extenders.Includes: Smart Hub with built-in 95dB siren, Motion Detector, Door Sensor, Keypad, SOS Button, Siren Light with built-in 95dB siren, Window/Door security stickersFree Exclusive App for Ray@Home : Various user-friendly functions are updated continuously. The app is available for both Android & iOS devices.