First Alert ONELink Smoke and Carbon Monoxide Alarm w/ Voice Location

Features and Benefits:
• ONELink-enabled Smoke and Carbon Monoxide alarm
• Programmable with up to 11 locations in your home - when alarm sounds it will tell you the location of smoke or carbon monoxide
• Wireless feature allows multiple alarms to talk to each other - when one alarm sounds, they all sound
• Combine multiple First Alert ONELink alarms to create a wireless safety network
• Wireless operates on 914 MHZ 3 channels and will not interfere with other electronics
• Photoelectric smoke-sensing technology reduces nuisance alarms
• Includes test / silence button, low battery warning, and end of life timer
• Uses 2 "AA" batteries (included)