X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Not Included), Model XP0A-MR, 1-PackBrand: X Sense Color: White Features: Note: The alarm cannot be directly added to the app and a base station is required App Alerts: When you add the alarm to the base station (not included), you will get instant alerts on your phone whenever the device detects danger or its status changes; you can share the alarm with up to 12 family members to keep them in the loop Talking Alarm Says the Location: Quickly identify any danger thanks to this talking