Kidde 10 year worry free combo NWT fire alarm carbon monoxide alarm

The Kidde P3010CU is a 10-year, sealed battery, smoke and carbon monoxide alarm with a voice warning, sealed in lithium battery will power the unit for the entirety of 10 year life, eliminating the need for battery replacement and worry about unauthorized battery removal&works during power outages, there are no pull-tabs, no switches, everything is automatic. 10 Year Lithium battery never needs replacement - simply recycle the smoke detector Alarm automatically activates when attached to the mounting bracket. Voice warning alerts of "Fire!" when a smoke or fire hazard is present, "Warning! Carbon monoxide!" when gas is detected, or "Low battery" End of Life Hush - End of life indication can be silenced three days at a time up to 30 days to allow for alarm replacement at a more convenient time. Smart HushTM - Temporarily silences nuisance alarms for approximately 9 minutes and will not allow hush mode unless the unit is in alarm mode. Photoelectric Sensor - Smoke alarm contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Electrochemical sensor technology - detects poisonous carbon monoxide gas Smoke and CO sensing technologies work together to detect real fires faster and reduce nuisance alarms Blinking LED lights indicate when: alarm is in operation, was initiated, or is in hush mode Replacement Chirp - alerts to replace alarm after 10 years of operation