The MaxRanger4KMini has 3 cameras that utilize HaLow technology that gives some of the best range for Wi-Fi of up to 1000ft.300meters, line of sight and 330ft/100 meters across obstacles like wall, ceilings and trees. Enjoy 4K video without frustrating dropouts or blindspots. Intelligent alerts proactively warn you of unwanted activity. Enjoy peace of mind with secure local storage on the included 32GB MicroSD card, free of subscription fees and easilty accessible on the SwannSecurity App. No back up battery is included for the base station.