Nest Protect smoke and carbon monoxide detector

Nest Protect smoke and carbon monoxide detector. • With fixed connection • Uses Wi-Fi to send low-battery alerts, smoke, carbon monoxide and sensor failures to your smart device • All of these alerts are managed by the included app that includes voice alarms, security checks, and sound tests • Can reduce the alarm tone on your phone and know the various concentrations of smoke and carbon monoxide and where it comes from • Self-tests more than 400 times a day, check status via the Nest app • Functionality "Quiet Night" briefly emits a green glow to indicate a weak battery instead of emitting an alarm during the night • One button to test all your detectors.