Self-contained luminaire for double-sided backlit signalling with very high uniformity. Comprised of one profile and frame extruded in synthetic material, optic group via LGP plate with laser marking for optimum internal reflection. Doble-sided light output requiring the selection of two emergency signs or opaque sheet if informing on only one-side is desired (see accessories). Dimensions of the sign 228x228 mm. Suitable for ceiling mounting. It has a normally-off LED light source, which provides lighting during a certain amount of time when the Mains voltage fails. An internal microprocessor checks the status of the device and periodically performs functional and autonomy tests, reporting on their status by means of a dual-colour LED. Can simulate a normal power fault using a remote control order (inlet TELEM).