SITERWELL; This hardwired smoke and carbon monoxide detector has a built-in 10-year battery, providing protection in the event of a power outage. When connected to AC power, the backup battery ensures reliable operation without the need for replacements for a decade. The GS886F-H02 smoke detector and carbon monoxide detector combo uses photoelectric and electrochemical sensors ensuring high accuracy and reliability. The dual-wave detection technology, it is more sensitive to detecting slow smoldering fires which produce light smoke, can reduces nuisance alerts from cooking, allowing you to prepare meals without being interrupted by unnecessary alerts. This smoke and carbon monoxide detector hardwired connected to can link up to 18, when any alarm is triggered, all alarms will sound,
