First Alert Smoke Alarm, Wireless Battery Powered Photoelectric Onelink w/ Voice Warning

About the First Alert SA511B OneLink Wireless Battery Powered Smoke Alarm with Voice When it comes to keeping your home and family safe from the threat of a fire, look no further than the First Alert SA511B. Keeping multiple alarms connected has never been easier. The First Alert SA511B can easily and wirelessly connect to up to seventeen other alarms, eliminating the trouble and time of running wiring through walls. The First Alert SA511B comes with two silence optionsmdash;one to quiet the low battery alarm and the other to silence an unnecessary alarm. With a frequency of 915 MHz, you wonrsquo;t need to worry about unreliable connections between alarms. The First Alert SA511B offers up to three channels and a whopping 65,000 possible security codes. There is no need to worry about the possibility of not hearing the alarm when it sounds. The First Alert SA511B is equipped with a 85decibel alarm and runs on two AA batteries, making it easy to hear and easy to maintain. The battery door even alerts you of low power by flashing. The First Alert SA511B is sure to cover all of your smoke alarm needs.