One is battery operated and one is wired. A wired smoke alarm is the better alternative because you don’t have to change the batteries once or twice a year.
These wired smoke alarms still have batteries in them, though. This is so you can still be protected even during a power outage.
Smoke alarms have an expiration date.
Even if you have the most expensive smoke alarm, you will still need to replace it. Like most things, smoke alarms are not built to last forever.
It’s highly advisable that you change it every 5 to 7 years. This is also one of the first things you should check when you move into a new place. For more information visit website #http://newpriceinc.com.
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