Series of LED indoor luminaires consisting of luminaire inserts and mounting rails for the electrical connection, suitable for commercial and industrial applications, consisting of: Luminaire housing made of drawn powder-coated aluminium (white). Optics made of technopolymer lenses with increased light transmission. Symmetrical optics (S/EW-S/W), asymmetrical right (A/M R), asymmetrical left (A/M L) and double asymmetrical (2A/M). Optics developed for greater visual comfort. Light source consists of several LED modules. LED 3000 K CRI > 80 and 4000 K CRI > 80 versions are available as standard. Other colour temperatures and shades on request. Versions with ON-OFF driver, dimmable DALI, and with uninterruptible power supply with 3 hours autonomy are available. The ceiling light is fixed to the electrically connected RAIL system with springs and without the use of tools. SMART systems can be realised with KITS wireless, available as accessories, which can be combined with the RAIL 7 Pole DALI system and the DALI ceiling light. The SMART solution comprises an electronic device for intelligent lighting control and presence and light sensors based on an 868 MHz wireless platform. This can be used to realise systems that interact with the environment. Available as an accessory RAIL with 5 poles, which can only be used with ON-OFF versions. Available as an accessory RAIL for 7-pole DALI, only to be used for the TRY DALI versions or a combination of TRY DALI and TRY ON OFF. Available as accessory RAIL for 9-pole DALI/EM, to be used for the versions TRY EM, TRY EM +DALI or combinations of the versions TRY EM , TRY DALI and TRY EM + DALI. A complete EUROSTANDARD PLUS electrical track module is available as an accessory for installing compatible spotlights (AS... LED). All RAIL elements are supplied complete with internal 3-phase wiring, realised with 2.5 sqmm cable, quick connectors and automatic disconnectors for quick installation of the ceiling light. Dimmable DALI versions are available on request (25-34 W).