LIGHTING
Everything to light up your fleet.
Rigid bars, flexible strips and tubular LED lighting, developed and customised by NSS for buses, trains and ambulances — with NSS's own DALI-2 control electronics for dimming, tunable colour temperature and driver's-cab integration.
Lighting designed for every challenge.
The NSS team develops and customises lighting solutions for different applications, focusing on efficiency, safety and design.
Buses
NSS lighting ensures uniform light in aisles, entrances and technical areas of buses. The modular installation adapts easily to different interiors, offering a safe, comfortable and technically reliable environment for passengers and operators.
Trains
NSS equips railway trainsets with robust and elegant lighting solutions, such as in the carriages and toilets. The LED bars and strips blend discreetly into the vehicle's design, ensuring visual comfort and consistent performance throughout the whole train.
Ambulances
In ambulances, LED lighting ensures clear, intense light in clinical intervention and storage areas. It's a technical, practical and long-lasting solution, designed to meet everyday challenges and support medical teams with reliability and efficiency.
Rigid lighting
Tested and approved for rail rolling stock (EN 50155).
NSS's rigid functional range consists of several models of white LED bars. Among these, the NRL001 stands out — highly modular and customisable, ideal for installation in vehicle technical ducting or embedded lighting solutions. All solutions in this range offer:
High durability
Uniform light
Practical installation (modular format)
Compatibility with different layouts and surfaces
EN 50155 (NRL001 bars)
Test passed (ISQ) for the NRL001 LED bars in this range: resistance to vibration, temperature variation, humidity and electromagnetic compatibility for rail rolling stock.
Flexible lighting
White functional or RGB decorative strip, for curved profiles.
Available in white light (functional) and RGB (decorative) versions, it adapts to curved profiles or technical areas. White light offers efficiency and visual comfort. The RGB version creates customised, decorative atmospheres, within the range of available colours.
Discreet integration
Energy efficiency
Technical or decorative style
Tubular LED lighting
50,000-hour lifespan, CRI above 80.
Tubular LED lighting is an efficient, reliable solution for transport vehicles. With a compact design and advanced technology, it delivers uniform, comfortable and energy-efficient light.
One light, three moments
The same LED bar changes through the journey — cooler and brighter in the morning, warmer and dimmer at night. CONCEPT — illustration, not a real capture of the system; the interior scene is conceptual, to illustrate the colour-temperature effect (~1800K to ~4000K) of the NSS LED Driver.
Day — cool and uniform
Late afternoon — warm and dimmed
Night — dim and comfortable
NRL003 MODEL
Light that changes throughout the day.
The NRL003 model is an LED bar equipped with HCL (Human Centric Lighting) technology. This solution was designed for environments where visual comfort and adaptation to natural light are essential, combining technical performance with attention to human needs.
What is HCL (Human Centric Lighting)?
Human Centric Lighting is a technology that automatically adapts colour temperature and light intensity throughout the day, simulating the behaviour of natural light. The aim is to align artificial lighting with people's biological rhythms – the so-called circadian rhythms – thereby promoting:
Greater visual comfort and reduced fatigue
Stimulation of concentration and cognitive performance
A sense of wellbeing in environments with prolonged occupancy
A more natural, balanced atmosphere throughout the day
LCU + LED DRIVER — DALI-2
The electronics that control the light automatically.
NSS develops the control electronics for its LED lighting range: the LCU (Light Control Unit), the central controller, and the LED Driver, the addressable module installed at each luminaire. The two communicate over a DALI-2 (IEC 62386) bus, and this pair is what lets NSS rigid bars, flexible strips and tubular lighting run in dimmable, tunable-white mode — individually or group addressed, and integrated with the driver's cab and the vehicle data bus.
The LCU, from the outside
Side view
M12 connectors
Rear profile
LCU — Central Lighting Control Unit
4 independent DALI-2 buses
Master of up to 64 short addresses and 16 groups per bus — up to 256 addressable light points per unit.
Local REST API and web interface
Level, colour temperature, on/off and group control, per bus and per address or group, with a local web configuration and diagnostics interface.
4 configurable digital inputs
For vehicle signals — emergency, cleaning, lighting supplement, spare — with hardware/software debounce.
Local reading-light control
Supports a DALI-2 rotary input device (IEC 62386-103, optional) for driver-side intensity adjustment, kept in sync with network-side changes.
MQTT state publishing
Level, colour temperature and consumption of each luminaire, per bus, onto the vehicle data bus.
Driver's-cab integration
Automatic driver's-cab panel discovery via mDNS and self-registration of an LCU settings tab, following the ITxPT S02 protocol.
LED Driver — Per-Luminaire Module
Addressable DALI-2 slave
Short address/group set via physical switch or DALI command, persisted in non-volatile memory.
Tunable-white colour temperature
Two PWM channels (warm/cold), blended to the DALI-requested colour temperature, over a configurable range — typically ~1800K to ~4000K factory default.
2 additional reading-light channels
Local push-button control — short-press toggle, long-press dimming — independent of the general-lighting DALI command.
Ambient light sensor
Dedicated analogue input, with per-channel consumption monitoring available via DALI query.
Persistent parameters
Short address, group, power-on level, fade time/rate — kept in non-volatile memory, surviving power loss.
Remote update and recovery
OTA firmware over HTTPS
Server certificate validation, encrypted images and secure-versioning anti-rollback protection, with the firmware image validated before flashing.
Remote network recovery
A dedicated command, addressed to the unit's serial number, resets network configuration to factory defaults and restarts the unit — no physical access needed. Sensitive configuration fields require cryptographic authorisation before write.
RAIL ROLLING STOCK
Rail lighting: reliable on every train.
Within NSS's rail lighting range — which includes interior and reading lights, headlights and tail lights — the NRL001 modules and T8 LED tubes provide interior lighting for rolling stock, powered at 24VDC or 110VDC, with a 50,000-hour lifespan and compliance with rail technical standards.
LED module for rolling stock
24VDC. Modular. Ready for the train.
The NRL001 functional bar integrates into technical ducting and carriage ceilings, providing uniform, low-consumption interior lighting. With 48 warm-white LEDs per module, 24VDC power supply and consumption of just 9.6W, it's a modular solution ready for series installation along the whole train.
Dimensions 499.87 x 17.02 x 4.1 mm
48 warm-white LEDs per module
24VDC power supply, 400mA consumption
Total consumption of 9.6W
T8 LED tubes for rail lighting
NSS's range of T8 LED tubes is available in three power ratings, all powered at 110VDC, with a 50,000-hour lifespan and a colour rendering index (CRI) above 80.
EN 50155 (NRL001 bars)
Test passed (ISQ) for the NRL001 LED bars in this range — resistance to vibration, temperature variation, humidity and electromagnetic compatibility. Does not cover the T8 LED tubes.
EN 45545 (reference)
European standard for fire reaction in rail rolling stock — reference for the rail lighting range.