IoT GSM/GPRS/MQTT Street Light Controller for Smart Cities

The Nelso IoT GSM/GPRS/MQTT Street Light Controller is an intelligent street lighting automation system designed for municipalities, smart cities, industrial campuses, highways, SEZs, residential townships and large commercial premises. It enables centralized monitoring, remote control, automatic scheduling and real-time electrical parameter measurement of street lighting networks.
Unlike conventional street lighting systems that require manual switching and physical inspection, the Nelso Smart Street Light Controller allows operators to control and monitor multiple street light groups directly from a centralized cloud dashboard using GSM/GPRS/MQTT communication.
The system helps reduce electricity consumption, maintenance costs and manpower while improving operational efficiency and reliability.

Where to buy

How the IoT Street Light Controller Works

The controller communicates with the central cloud server using GSM/GPRS/MQTT technology.
Through the cloud dashboard, operators can:

  • Switch street light groups ON or OFF
  • Monitor electrical parameters
  • Receive fault alerts
  • Configure schedules
  • View historical reports
  • Manage multiple installations from one location
Instead of controlling every lamp individually, the controller operates groups of poles by switching the phase through industrial contactors. This approach offers a reliable, economical and scalable solution for large lighting installations.

Cost-Effective Group-Wise Street Light Control

One of the biggest advantages of the Nelso GSM/GPRS/MQTT Street Light Controller is its group-wise control architecture, which significantly reduces the overall project cost.
Unlike individual smart street lighting systems that require an IoT controller, communication module, SIM card and power supply. The Nelso solution controls an entire group of poles from a single control panel.
A typical group can include 5 to more than 100 street light poles, depending on the project design and electrical distribution.

Why Group-Wise Control is More Economical

  • Only one controller is required for an entire group of poles.
  • No communication module is needed on individual poles.
  • No SIM card or data plan for every street light.
  • No additional wiring or installation inside each pole.
  • Lower maintenance and service costs.
  • Fewer devices mean fewer failure points.
  • Simple installation using existing contactor panels.
  • Ideal for municipalities looking for an affordable Smart City solution.

Example

Individual Pole Control
100 Poles = 1 GSM/GPRS/MQTT Controllers + 100 Node Modules

Nelso Group Control
100 Poles = 1 GSM/GPRS/MQTT Controllers + Existing Contactor Panel

This dramatically reduces both capital expenditure (CAPEX) and operational expenditure (OPEX) while still providing centralized monitoring, scheduling, fault detection and energy metering.

Lower Project Cost Without Compromising Features

Although the controller operates lights group-wise, users still receive powerful smart features, including:
  • GSM/GPRS/MQTT-based communication
  • Central cloud dashboard
  • Group-wise remote ON/OFF control
  • Automatic scheduling
  • Fault detection for each lighting group
  • Real-time voltage, current, power, frequency, power factor and kWh monitoring
  • Alarm notifications
  • Historical reports
  • Energy usage analytics
For most municipal roads, highways, industrial estates, townships and campuses, group-wise control provides the best balance between functionality and project cost, making it one of the most economical and practical smart street lighting solutions available.
Result: Smart street lighting at a fraction of the cost of individual pole automation.

Key Features of Nelso GSM Street Light Controller

GSM/GPRS/MQTT Based Communication

The controller uses GSM/GPRS connectivity along with the MQTT protocol for fast, secure and reliable communication between the street lighting panel and the cloud dashboard.
Benefits include:
  • No dedicated internet connection required
  • Wide-area coverage
  • Real-time communication
  • Secure cloud connectivity
  • Remote configuration updates

Centralised Dashboard Control

Manage all your street lighting installations from a single dashboard.
Operators can:
  • Turn groups ON/OFF remotely
  • View controller status
  • Monitor communication status
  • Check electrical parameters
  • View historical data
  • Receive fault notifications
This eliminates unnecessary field visits and significantly reduces maintenance costs.

Automatic ON/OFF Scheduling

Street lights can be scheduled automatically.
Users can configure:
  • Daily schedules
  • Weekly schedules
  • Manual override
Once configured, the controller automatically switches each lighting group according to the programmed schedule without operator intervention.
Benefits include:
  • Reduced manpower
  • Consistent operation
  • Energy savings
  • Improved reliability

Fault Detection System

The controller continuously monitors the electrical condition of each lighting group.
When one or more street lights become defective, the controller detects abnormal electrical characteristics and immediately generates an alert on the dashboard.
This allows maintenance personnel to quickly identify the affected lighting group.
After receiving the alert, technicians only need to inspect that particular group to locate the faulty pole, reducing maintenance time considerably.

Real-Time Electrical Parameter Monitoring

The built-in energy monitoring system measures important electrical parameters in real time.
Dashboard displays:
  • Voltage
  • Current
  • Active Power
  • Frequency
  • Power Factor
  • Energy Consumption (kWh)
This information helps authorities:
  • Monitor energy usage
  • Detect overload conditions
  • Identify abnormal power consumption
  • Improve energy efficiency
  • Reduce electricity bills
  • Generate consumption reports

Cloud-Based Monitoring

Because the controller communicates through MQTT, operators can monitor installations from anywhere using an internet-connected computer or smartphone.
The dashboard provides:
  • Live status
  • Device health
  • Electrical parameters
  • Group status
  • Alarm history
  • Energy reports

Applications

The Nelso Smart Street Light Controller is suitable for:
  • Smart Cities
  • Municipal Corporations
  • Nagar Panchayats
  • Highway Lighting
  • Industrial Parks
  • Factories
  • Residential Townships
  • University Campuses
  • Ports
  • Railway Stations
  • Defence Installations
  • SEZs
  • Large Commercial Complexes

Benefits

  • Remote operation from anywhere
  • Reduced electricity bills
  • Lower maintenance cost
  • Reduced manpower requirement
  • Automatic scheduling
  • Group-wise lighting control
  • Cloud dashboard monitoring
  • Real-time electrical parameter measurement
  • Quick fault detection
  • Easy maintenance
  • Reliable GSM/GPRS communication
  • MQTT-based IoT architecture
  • Scalable for thousands of lighting points
  • Ideal for Smart City projects

Why Choose Nelso?

Nelso Technology Pvt. Ltd. is an Indian manufacturer specialising in IoT controllers, GSM-based automation products, pump controllers, DC-DC converters and industrial electronic solutions. The company's street light controller is designed for reliable operation, low power consumption and long service life, making it a cost-effective solution for modern lighting infrastructure.

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