Zhaga IoT
Smart Street Light Controller

Open Cellular Network
Gateway Free Installation
Zhaga Book 18 Interface
Energy Metering
Smart City Ready

Next-Generation Zhaga IoT controller
to monitor and control citywide street lights

OpenSky IoT – Zhaga

Our OpenSky IoT Zhaga 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/ 3G/ 4G/ NB-IoT). This eliminates the need for dedicated Gateways.

The standardized Zhaga book 18 interface of OpenSky outdoor lamp controller (OLC) ensures a quick, tool-free installation and universal luminaire compatibility.

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

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Up to 60% energy savings and CO2 prevention

Ability to dim street lights automatically through pre-defined schedule maximizes energy savings and cuts CO2 emissions

Up to 50% reduction in maintenance costs

Proactive alerts/ notifications for fault, alarm or an outage optimizes maintenance and reduces cost 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

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: EGPRS, Edge, LTE Cat M1 or NB-IoT.

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 - Zhaga Controller

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.

Auto-Commissioning

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
- GLONASS
- 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

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.

Several Dimming Options - Zhaga Controller

Advance 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

OpenSky OLC allows connection of motion sensors to deliver dynamic light-on-demand, thereby enhancing safety perception of road users.

CitySense Lite
DALI D4i based motion sensors
Logic Signal Input (LSI) based sensors

Adaptive Lighting

OpenSky OLC allows connection of motion sensors to deliver dynamic light-on-demand, thereby enhancing safety perception of road users.

CitySense Lite
DALI D4i based motion sensors
Logic Signal Input (LSI) based sensors

Energy Analytics and Luminaire Health Monitoring

Built on Dali D4i standard, OpenSky Zhaga SLC delivers powerful grid, LED driver and luminaire analytics for infrastructure health monitoring and smart maintenance:

Grid Voltage
Mains Current
Power (Active, Apparent)
Power Factor
Energy Consumed (Active, Reactive)
Lamp / Driver Operating Time
Driver Temperature
Driver Start 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 (in progress)

Zhaga Book 18 Interface
OpenSky IoT street light controller comes with a standard Zhaga (book 18) interface. This ensures universal compatibility with all LED luminaires (from any manufacturer) with a standardized Zhaga 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: eGPRS, Egde, LTE Cat M1, LTE Cat-NB (commonly termed as 2G/ 3G/ 4G/ NB-IoT). OpenSky consumes less power, offers deep coverage and enables secure and efficient local communication, making it a reliable street light controller for your smart city.
Flexibility
Easily create custom light profiles for your OpenSky smart street lights with Tvilight CityManager or 3^rd party light management software (LMS). You have total control on when, where and how the lamps turn on/ dim.
Interoperability
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 Zhaga 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.

Over 600 cities trust Tvilight.
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Smart lighting solution in practice

Bikepaths, Case studies, Parking Lots, Residential Areas, Roadways

Zhaga IoT Smart Street Light Controller

Open Cellular Network

Gateway Free Installation

Zhaga Book 18 Interface

Energy Metering

Smart City Ready

Next-Generation Zhaga IoT controller to monitor and control citywide street lights

OpenSky IoT – Zhaga

Open Standard Cellular Network

Gateway Free Installation

Gateway Free Installation

Auto-Commissioning

Individual Light Management

Individual Light Management

Advance Lamp Switching and Dimming Options

Adaptive Lighting

Adaptive Lighting

Energy Analytics and Luminaire Health Monitoring

Single CMS for Citywide Light Control

Over 600 cities trust Tvilight. Would you like a demo?

Get the news from Tvilight straight to your inbox

Smart lighting solution in practice

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Zhaga IoT
Smart Street Light Controller

Next-Generation Zhaga IoT controller
to monitor and control citywide street lights

Over 600 cities trust Tvilight.
Would you like a demo?