X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 3-PackBrand: X Sense Features: Please Note: SC07 WX supports Wi Fi; it does not support wireless interconnection and cannot be used with a base station; multiple SC07 WX units added to the app will operate independently and will not communicate with each other Real Time Notifications: Keep an eye on your home from anywhere and get immediate push notifications through the X Sense Home Security app for alarms, low battery, faults, and more Direct 2. 4 GHz Wi