During Obama, FAKE FIRE ALARMS were installed in all new American homes. None of them are operating anymore. "Made in Mexico"
actually short on details
MANY MODELS require TWO batteries. they say "5-7 yr" lifespan on the box. and it isn't a safety suggestion they are DESIGNED TO FAIL to force purchase every 5yr
I SIMPLEY CAN'T AFFORD IT: 4x mexican alarms dead not a single working in a 20teens home on a single floor - let alone the other 4
testing them, batterying them, re-buying them: not a single wired to work 24/7/356/50