X-Sense Listener for Smoke & Carbon Monoxide Alarm, Free Real-Time Alerts, Requires SBS50 Base Station, SAL51

Make a Smart Alarm: Install the listener near your smoke/CO alarm; if triggered, you’ll be alerted of smoke and CO via mobile app when the base station (not included) alarm sounds

Universally Compatible: Works with all X-Sense alarms, including standalone/wireless interlinked models; standard and voice alarm compatible, with or without location

1,700 ft Transmission Range: Has a wide 1,700 ft (500 m) transmission range, even in a remote area of your home; connects reliably to the base station for a stable signal

Free Real-Time Alerts: Get quick app alerts when your home's smoke/CO alarm is triggered; stay up-to-date on your home's safety in real time so you can take immediate action

Connect 50 Devices to the Base Station: Supports SAL51 listener, XS01-M smoke alarm, XC01-M CO alarm, SWS51 water leak sensor, and STH51 thermo-hygrometer; customize your network to monitor your home safety anytime, anywhere

Easy Installation: Place the listener 2–6 in (5–15 cm) from the alarm and follow the app instructions to complete setup in minutes