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Experience the next level of fire safety with the Kidde Hardwired Smoke Detector, AA Battery Backup, Interconnectable & LED Warning Lights, model 20SAR. Batteries should be replaced every 6 months. A test-hush button allows you to test the battery operations as well as silence nuisance alarms, should they occur.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.