Housing: Die-cast and extruded (low copper) aluminium. Front housing hinges open for access and secures via a bolt hidden behind a spring loaded flap. Finish: Exterior grade, metallic powder coated paint. Gaskets: One piece silicone.Reflector: Aluminium, white powder coated. Diffuser: UV stabilised polycarbonate.Drivers: HPF, electronic for 120-277V. LED modules are wired for a separate circuit.Minimum Starting Temperature: -20°C.Remote emergency: Emergency option provides a 1.5 hour emergency lighting facility. The remote system includes the inverter module, NiCad batteries and a remote wall/ceiling LED charge indicator and test switch (maximum distance between wall/ceiling plate and luminaire is 4.5m/15’). Test switch fits a single gang box (not supplied).Mechanical: Mounts directly over a standard electrical junction box (by others). Mounting hardware (by others).Approval: ETL. Wet location, IP65