http://www.1homesecuritysystems.info/first-alert-sa521cn-onelink-hardwire-wireless-smoke-alarm-with-battery-backup/ Sat, 31 Oct 2009 20:14:27 -0400 http://wordpress.org/?v=2.8.4 hourly 1 http://www.1homesecuritysystems.info/first-alert-sa521cn-onelink-hardwire-wireless-smoke-alarm-with-battery-backup/comment-page-1/#comment-636 Tut Sat, 31 Oct 2009 20:14:27 +0000 http://www.1homesecuritysystems.info/first-alert-sa521cn-onelink-hardwire-wireless-smoke-alarm-with-battery-backup/#comment-636 5.0 out of 5 stars <strong>work so far</strong><br /> I ordered several and have set up two of them so far which is easy to do. They work in theory. Don't know how they will do in a fire and I hope never to find out. 5.0 out of 5 stars
work so far
I ordered several and have set up two of them so far which is easy to do. They work in theory. Don’t know how they will do in a fire and I hope never to find out.

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