Open Cellular Network
Gateway Free Installation
Plug & Play NEMA Twist Lock
Energy Metering
Smart City Ready

Our OpenSky IoT NEMA smart street lighting controller (SLC) uses open standard telecom network. Use of cellular network allows the OpenSky IoT controller to connect directly to a local cell tower (2G/ 4G/ NB-IoT). This eliminates the need for dedicated Gateways.

Standard NEMA (7-pin, ANSI c136.41) dimming receptacle of OpenSky outdoor light controller (OLC) guarantees swift installation and universal luminaire compatibility.

OpenSky IoT NEMA is a perfect smart city street lighting solution that is quick and easy to deploy throughout your city.

Open Standard Cellular Network

Open Standard Cellular Network

Public infrastructure demand high reliability and security. Therefore, OpenSky wireless OLC uses standardized 3GPP cellular network to connect an individual street light to our light management platform.

OpenSky OLC automatically selects the best available local connectivity: Edge (EGPRS), LTE Cat M1 or NB-IoT (NB2).

Cellular networks comply to highest global security standards. It is used by billions of devices today. They offer long range, deep coverage, high availability and managed Low Power Wide Area network (LPWAN).

Gateway Free Installation

Unlike proprietary network providers (e.g. LoRA, Sigfox, Zigbee, Wi-Sun and UNB), OpenSky SLC connects directly with our light management platform via local cellphone tower.

There is no need for local Gateways. This in turn significantly reduces cost and hassle of maintaining a local network infrastructure, since local operators manage and maintain the network.

Gateway Free Installation


In-built GPS within OpenSky OLC supports automatic registration. This helps a local electrician to install SLC without an expert knowledge/ training.

  • No need for a field application tool
  • No network engineering needed
  • OpenSky automatically receives its geo-location through:
    • GPS
    • Galileo
    • QZSS

Individual Light Management

Different parts of a city have different road lighting requirements. Individual light management through OpenSky OLC offers incredible flexibility.

Each luminaire can be individually switched and dimmed using custom light scenes. Vice versa, luminaires send meaningful alerts for smart and efficient maintenance.

Individual Light Management
Advanced Lamp Switching and Dimming

Advanced Lamp Switching and Dimming Options

Cities often have different types of luminaire and driver. Power grid infrastructure may also vary across the city. OpenSky OLC offers you excellent flexibility with selecting suitable light profiles to meet local requirements:

  • Twilight (photocell/ ambient light sensor)
  • AstroClock (astronomical clock)
  • Time-based light scene
  • Calendar-based schedules
  • Central ALS (photocells in city)
  • Adaptive (motion sensor)
  • Emergency (HiLight app)
  • Autonomous mode

Adaptive Lighting

NEMA IoT allows connection to LSI (logic signal input) based motion sensors to deliver dynamic light-on-demand, thereby enhancing safety perception of road users.

* LSI sensor would need 12 – 24V input

Adaptive Lighting
Energy Analytics and Luminaire Health Monitoring

Energy Analytics and Luminaire Health Monitoring

With inbuilt energy meter, you can accurately monitor and measure the energy usage and performance status of your street lights in our Light Management Software, CityManager.

  • Grid Voltage
  • Mains Current
  • Power (Active, Apparent)
  • Power Factor
  • Energy Consumed (Active, Reactive)
  • Lamp / Driver Operating Time
  • Driver Temperature
  • Driver Stat Counter

Single CMS for Citywide Light Control

OpenSky OLCs are fully compatible with CityManager, an interoperable central management software (CMS). CityManager supports all the roadway lighting control requirements:

  • Individual Lamp Control (IoT and Mesh network)
  • Group Control (feeder pillar/ control cabinet)
  • City Skyline/ façade lighting control
  • Open API interface (for smart city and asset management)
  • TALQ 2.0 Certified
Single CMS for Citywide Light Control


Up to 60% energy savings and CO2 prevention

Ability to dim street lights automatically through pre-defined schedules or other dimming options maximizes energy savings and also helps reduce CO2 emissions.

Up to 50% reduction in maintenance costs

Proactive alerts/notifications for faults, alarms and outages help turn optimize maintenance and reduce costs by up to 50%.

Total control of entire lighting infrastructure

Monitor, manage and control each individual light point or a group of street lights remotely from a single location.

Lower light pollution

During the off-peak hours, street lights dim to a predefined low level. Thereby reducing light pollution and benefitting nocturnal life.

Customer feedback

We wanted to accomplish a few things, namely reducing energy consumption at the stations and lowering light pollution for people living in the area. At the same time, we wanted to ensure public safety. Tvilight’s solution combined this beautifully.

Eelco KrakauContract Manager, Dutch Railways

JCL is using the Tvilight solution in County Kerry, which is the first installation of its kind in Ireland. The solution has proven to be very successful, enabling us to achieve 60% savings on energy. It’s a very impressive technology.

Philip CurneenDirector and Program Manager at JCL

Tvilight’s adaptive lighting control is an excellent solution; it has allowed us to save energy as well as manage the street lights remotely. I truly believe that this is the future for the Netherlands, Europe and the world.

Robin BrekelmansProject Manager, Municipality of Nuenen

I am really satisfied with the result. By using LED streetlights and dynamic dimming, we save more than 60% of the energy previously spent on street lighting. This is a major achievement.

Stephan KikkertProject Leader, Municipality of Texel

The beauty of the TVILIGHT solution is that it doesn’t compromise public safety in any way. The true light-on-demand helps to keep the streets safe while minimizing the light pollution.

Haye MensonidesCommercial Director of Dynniq

Technology is developing rapidly within public lighting. That’s why we choose Tvilight intelligent street lighting solution that is future-proof. Connected lighting will play a central role in the future.

Sander KlijnstraMunicipality of The Hague

The combination of new LED streetlights, dynamic dimming, and remote control options offered by TVILIGHT is an optimal investment because it helps us save energy while improving public safety and security at the port.

Bas van den BoschProject Manager, Port of Moerdijk

Classic streetlight design and integrated intelligence do not have to be mutually exclusive. We combined classic streetlight design with Tvilight’s wireless lighting control options to help The Hague meet its unique goals.

Pieter VisserAccount Manager at DE NOOD

Tvilight: The 'talking' streetlamps that will lighten your heart (but not your wallet). It is a first step to Smart Cities...

Daisy CarringtonCNN

We aim at becoming a Digital City with greater connectivity and information access for the citizens as well as the tourists. With intelligent lighting solution, this vision became a reality. Our city is benefiting in every aspect – from safety and security, to easy access to information.

Shikhar AgrawalGovernment of Rajasthan

Many youngsters visit the cinema, the skating ring, sports facilities and pubs during late evening hours. Sometimes they move in group, but often alone, and then good lighting is essential for a better sense of safety. This is an excellent initiative for the bicycle highway.

Abdrahman LabsirCity Council Member at Youth and Prevention (Mechelen)

Wireless smart lighting system was selected as most the preferred solution. It improves illumination and safety, reduces cost and cuts CO2 emissions. Due to the system’s openness and flexibility, it also offers a foundation to host innovative systems that would help us become a smart city.

City of Dortmund

Individual light management and control provide unprecedented flexibility. Performance of all the street lights is clearly visible in the light management system. Together with smart monitoring, this provides an unprecedented degree of transparency for the operator of the installation. This is what future smart light looks like today!

Jan WiesemannProject Manager at Trilux


NEMA Compatible

OpenSky IoT street light controller comes with a standard NEMA (7-pin, ANSI c136.41) dimming receptacle. This ensures universal compatibility with all LED luminaires (from any manufacturer) with a standardized NEMA connector.

Tool-Free Installation

A simple twist-and-lock into the standardized connector secures OpenSky OLC into position in seconds – no tool needed.

Integrated Ambient Light Sensor

Integrated photocell (twilight sensor) enables street light switching based on the naturally available ambient light.

In-Built GPS

Inbuilt GPS helps to automatically geo-locate and commission an individual streetlight. This eliminates need for an in-field commissioning tool, network engineering and crew training.

Secure Reliable LPWAN Communication

OpenSky OLC uses open standard LPWAN cellular communication: Edge (eGPRS), LTE Cat M1, LTE Cat-NB (commonly termed as 2G/ 4G/ NB-IoT (NB2)). It consumes less power, offers deep coverage and enables secure and efficient local communication, making it a reliable street light controller for your smart city.


Easily create custom light profiles for your OpenSky smart street lights with Tvilight CityManager or 3rd party light management software (LMS). You have total control on when, where and how the lamps turn on/ dim.


Cities often have multiple types of LED luminaires and drivers. Therefore, OpenSky IoT controller supports multiple dimming protocols (0-10V*, DALI, DALI 2, SR, D4I and ANSI C137.4).
*Drivers with 0-10V dimming must also support 24V auxiliary supply.

Versatile Dimming Control

OpenSky IoT street light controller supports ambient light sensor, astro-clock, calendar-based, adaptive and autonomous dimming.

Motion Sensor Support

Roads with limited traffic during the off-peak hours benefit significantly from adaptive light-on-demand. Therefore OpenSky supports compatibility with DALI D4i and LSI based motion sensors (e.g. CitySense Lite).

Advanced Health Monitoring

When combined with a Smart LED Driver (D4i/ ANSI c137.4-2019), OpenSky IoT delivers powerful, actionable data about the energy grid and luminaire health. This information supports local lighting operators with fault analysis, asset lifetime prediction and budget planning.

Timely Notifications

Receive all updates concerning your street lighting infrastructure via email or through our CityManager software platform. It helps take quick restorative actions before citizens get a chance to complain.

Pole Knock-Down Alert

In-built tilt sensor sends an automatic alert if the street pole suffers damage due to car crash. This in turn helps the maintenance crew to swiftly respond to unsafe exposed power grid as well as initiate warranty claims.

Over-the-Air Update

OTA is essential for street light controllers. In particular, security updates / patches are mandatory. With OpenSky IoT, you can update the software in matter of minutes, rather than weeks or months.

IP66 + UV Stabilized

Outdoor application demands robustness and weather resistance. With IP66 and UV stabilized housing, the OpenSky OLC can last a very long time, even in the harsh outdoor environments.

Last Gasp

During unexpected power outages, in-built supercapacitor helps saving safety data to local memory.


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