‎5 × Smoke Alarms XS01-M with CR123A Replaceable Batteries (Batteries Packed with Equipment), 1 × User Manual, 1 × Power Adapter and Power Cable, 10 × Screws and Anchor Plugs, 1 × SBS50 Base Station

X-Sense Smart Smoke Detectors with SBS50 Base Station, Wi-Fi Smoke Alarm Compatible with X-Sense Home Security App, Wireless Interconnected Mini Fire Alarm, Model FS51