Only 10 years of safety!!!
It’s a nuclear (probably Americanium) source that’s interrupted by smoke particles setting off the alarm, has a ten year life with fitted lithium batteries, where it wins is the software to your phone, ideal for remote Guinea pig barns, and you can mute the alarm if someone makes toast in the area covered by it. £50 well spent or dead pets, your choice.
Verified purchase: YesCondition: Pre-owned