This product is our choice for a connectable smoke detector.
The Alecto SA-43 is a wireless, connectable smoke detector. You can use this detector in a stand-alone setup or create your very own fire prevention network at home. How? Just link the detectors together. They have a range of 60 meters between them. Each detector runs on 2 AA batteries (with a lifespan of 5 years), so you'll be able to place them anywhere in the house. When the battery is (almost) empty, you'll hear a loud beep. If smoke is detected, they will emit an 85-decibel audio signal. What if you're having a dinner party at home and it simply isn't convenient for the smoke detector to be on at that specific moment? Just switch it off temporarily with the time-out button. The test button lets you test the smoke detector to make sure that it's working properly.