The Alarm Smoke & CO Listener sends you mobile alerts whenever it hears sirens from any smoke or CO detector in your home. Simply place the Listener near your existing detector, connect it to your Ring Alarm Base Station and protect your home.
3V Lithium Battery Included
2.95 in. Diameter; 1.06 in. Height (7.5 cm. Diameter; 2.7 cm. Height)
Z-Wave (250-foot range to Base Station)
Ring Alarm Kit and an existing Smoke/CO Detector
1 year limited warranty