Expand Your Smart Home: Supports up to 50 devices, including combo alarms (SC07-MR, XP0A-MR), smoke alarms (XS01-M, XS0B-MR), CO alarms (XC01-M), water sensors (SWS51, SWS0A), and thermo-hygrometers (STH0A, STH51). Extended Range: Offers superior 1,700 ft (500 m) coverage in open spaces for reliable whole-home monitoring. Loud 100 dB Alarm: Sends phone notifications when triggered, with the base station emitting an adjustable 100 dB alarm. All connected alarms sound together for full coverage. Compact Design: Space-saving base station with flexible placement options. Note: 1. Works with 2.4GHz Wi-Fi; not compatible with 5GHz networks. 2. If there is a Wi-Fi issue or power outage and the base station disconnects from your phone, the alarms will still function and interconnect.