First Alert Z-Wave Plus Smoke & Carbon Monoxide DetectorCondition: * New surplus stock, in OEM packaging. As pictured. Additional Details:* Z-wave compatible smoke and carbon monoxide alarm* Works with the Ring Alarm Security Kit (Not Included)* Requires Ring Alarm to Work with Ring* Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected* Automatically notifies Ring professional monitoring team to dispatch emergency responders to your home (Requires Ring Protect Plus)* Certified for use with Nexia Home Intelligence and other 3rd party Z-Wave systems. (NOT WINK compatible)* Reliable electrochemical carbon monoxide and photoelectric smoke sensors* Dual Smoke & Carbon Monoxide sensing, ultimate protection from two deadly dangers* Mute button, mutes unnecessary alarms immediately. Test alarm function with same button* Tamper resistant – locks alarm to mounting bracket to prevent removal of battery and/or alarm* End of life timer, alarm chirps when it is time to replace it* Operating Voltage: 3 Volt (Two 1.5 Volt AA) Battery Powered* 2 AA Batteries Included* Audio Alarm: 85dB at 10 Foot* Wireless Range: 131.24 Foot* Wireless Frequency: Z-Wave 500 Series* Meets UL217 & UL2034 StandardsFirst Alert5034481