The Kidde RGSAR-RW is a hardwired Ring App Enabled Smart Smoke detector with AA Battery Backup, Voice Alerts, Interconnected Alarm capability and cutting edge sensing technology with seamless Ring App integration. Experience whole home smart connectivity by adding one smart alarm to your existing Kidde hardwired alarms and get real-time notifications at home or away, including smoke and low battery warnings. Just download the Ring App to begin alarm setup - no additional devices required. This Ring App enabled smoke alarm features enhanced sensing technology to reduce false alarms often caused by cooking and sends fast alerts of smoke. Optional Ring subscription with 24/7 smoke monitoring for $5/mo allows trained agents to request emergency help in case of alarm. Powered by 120V AC wiring with two AA backup batteries. The test & hush button ensures your smoke alarm is working and allows you to silence the alarm.