Review on 🔥 UL Listed Photoelectric Smoke Detectors – 2 Pack Fire Alarms, 9V Battery Operated (10 Year Life Time) by Todd Cowdrey

They are a lot smaller than the ones I had before. I like that they are. I like the blinking red circle to let me know the device is working. Slightly rewards the battery to release the lever that allows the block to close. Once you understand that the battery must be present in order for the device to rotate into position and be securely fastened, you're all set. Great price for two packs. My only wish is that the manufacturers make them colorful or provide some kind of decoration to put on them.