The First Alert SA511 wireless interconnected smoke alarm with voice location is designed to notify you of trouble with both an 85 dB siren and voice notification. The battery-operated unit can be installed easily, without wires or an electrician. The units communicate tirelessly with each other and sound the alarm together, providing an efficient and comprehensive warning solution for large areas or homes with multiple stories. The smoke detector features a photoelectric sensor designed to sense smoke but minimize the number of false alarms due to cooking smoke or shower steam.
Voice and location equipped to alert you to where and what the threat is
Interconnects with up to 18 First Alert wireless enabled alarms so that when one alarm sounds they all do
Wireless Interconnect technology eliminates the need for an electrician to pull wires
Reliable radio frequency communication between alarms creates a secure fire safety system
Photoelectric smoke sensor helps to reduce nuisance alarms
7-Year limited warranty; equipped with end-of-life signal chirp, so you know when it's time to replace the unit for your safety
Smoke and CO alarms should be placed on every level and in every bedroom of the home
Tested to meet UL standards