The Ei105B model being recommended by a wide consumer association, I preferred his older brother, it Ei105H, which has a "silence" button (middle) and more. This smoke detector comes with a square battery. After one or two personal basic tests (steam pot of water, for example), it seems to work as expected. However, with this kind of product, it's never too sure it will fire when necessary ... but in any case safer than some of the competing products (search the Internet tests of consumer associations: it is usually uplifting). Moreover, it is manufactured in Europe (Ireland), and to standards NF. Here, no nuisance tripping regrettable since its reception, there is a week, and the battery was not outdated - I'll try to update this comment later if I object. Nothing RAS, that's really all good (it would benefit from a nicer hair, though).
