XSense WiFi Smoke Alarm for Home with Replaceable Battery XS01-WX Smart Alarm

Replaceable Battery. Replaceable 3 V CR123A lithium battery. Interconnected Alarm. 1 × Alarm Unit + 1 × Mounting Bracket + 2 × Screws + 2 × Anchor Plugs + 1 × Pin + 1 × User Manual. ≥ 85 dB at 10 ft (3 m) @ 3.2 ± 0.3 kHz pulsing alarm.