By popular demand. The extra-flat IR Quattro SLIM XS presence detector virtually disappears into the wall or ceiling. Thanks to the new and practical flush-mounted box format, it forms a strikingly inconspicuous symbiosis with the living environment and can now be installed in any commercially available flush-mounted box. In short: Our flattest presence detector just pretends not to be there at all - and yet is absolutely present when it matters. To be prepared for all eventualities, theSLIM XS is also available in a round design.