Approved for installation directly into insulation and combustible materials. For indoor and outdoor use Luminaires can be powered either by a separate controller or Nordtronic's 25 W controller (25 W or up to 8 Ø55 mm luminaires). Replaceable light source High color rendering - CRI>95 Designed for installation in zones 1 and 2 Clearance above the ceiling is 36 mm Quick and easy installation with springs Screwless connectors in the connection box Approved for passage - 3G1.5 mm2 Possibility to install with cable or flexible conduit of diameter of16mm. 7-year product warrantyJopa10-year surface warranty