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The Brilliance of Ellenex NB-IoT Device in Solar Streetlight Battery Charge Level Monitoring

Mohan Krishna Polavarapu

battery charge level monitoring

Client: Council in Queensland


Technology used: NB-IoT


In the sunlit avenues of Queensland, technological evolution is brightening the way we perceive urban infrastructure management. The strategic partnership between a local council and Ellenex, leveraging Narrowband Internet of Things (NB-IoT) devices, is shedding new light on the monitoring of battery levels in solar-powered streetlights. This collaboration not only ensures well-lit roads but also unveils the potential for expanded applications, substantial time and cost savings, and an overall elevation in sustainability.


  1. Real-time Battery Charge Level Monitoring: The heart of solar-powered streetlights lies in their batteries. Ellenex NB-IoT devices provide real-time insights into battery levels, ensuring optimal performance and preventing sudden outages. This proactive approach minimizes disruptions to public lighting, enhancing safety and convenience.

  2. Data-Driven Decision Making: With NB-IoT devices in place, councils gain access to a treasure trove of data. This data can be analyzed to identify usage patterns, optimize energy consumption, and plan maintenance schedules more effectively.

  3. Remote Monitoring and Management: Traditionally, manual checks on streetlights were time-consuming and costly. Ellenex NB-IoT devices allow remote monitoring and control, reducing the need for physical inspections and enabling swift responses to issues.

Further Applications:

  1. Environmental Monitoring: Beyond battery levels, NB-IoT devices can be equipped with additional sensors to monitor environmental factors such as air quality, temperature, and humidity. This data aids in creating healthier urban environments.

  2. Traffic and Parking Management: NB-IoT devices can be installed in parking spaces to relay real-time occupancy information, assisting motorists in finding available spots and contributing to smoother traffic flow.

  3. Waste Management: Monitoring the fill levels of public waste bins through NB-IoT devices optimizes waste collection routes, minimizing unnecessary pickups and reducing fuel consumption.

  4. Solar panels and other energy resource monitoring.


battery charge level monitoring

Labour, Time, and Cost Savings:

  1. Reduced Manual Inspections: The elimination of frequent manual inspections translates to significant labour savings. Maintenance teams can focus on targeted interventions rather than routine checks.

  2. Predictive Maintenance: By analyzing data trends, councils can predict maintenance needs accurately. This approach prevents costly emergency repairs and extends the lifespan of streetlight components.

  3. Efficient Resource Allocation: With data-driven insights, councils allocate resources efficiently. This includes deploying maintenance crews only when necessary and optimizing energy usage based on demand patterns.

  4. Streamlined Issue Resolution: Remote monitoring enables swift issue identification and resolution. Maintenance teams arrive prepared, and armed with information about the problem, thus reducing downtime.

The integration of Ellenex NB-IoT devices into Queensland's solar-powered streetlights heralds a new era of smart city management. Beyond their role in monitoring battery levels, these devices open doors to a multitude of applications that enhance the quality of urban life. As labour time and cost savings become tangible realities, councils are empowered to make informed decisions, allocate resources efficiently, and maintain the integrity of their streetlight networks seamlessly. With Ellenex NB-IoT devices illuminating the path forward, Queensland's smart city journey shines brighter than ever before.


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  • Air Compressor Operation Monitoring

  • Asset Cathodic Protection Monitoring

  • Asset Temperature Monitoring

  • Boilers Pressure and Temperature Monitoring

  • Building Structural Health Monitoring

  • Chemical Tanks Level Monitoring

  • Data Centre and Clean Room Pressure Monitoring

  • Diesel Delivery Management

  • Differential Pressure Monitoring

  • Dump Truck Overload and Operation Monitoring

  • Dust Collection System Monitoring

  • Farm Fish Operation Monitoring

  • Flood Monitoring

  • Frozen Food Delivery Management

  • Grain Silo Level Monitoring

  • HVAC Air Filter Performance Monitoring

  • HVAC Airflow Monitoring

  • Hydraulic Systems Overload Monitoring

  • Industrial Gas Cylinders Level Monitoring

  • Industrial Water Meters Digitalisation

  • Land Movement Monitoring

  • Liquid Storage Tank Level Monitoring

  • Manhole Blockage Monitoring

  • Milk Tank Level Monitoring

  • Negative Pressure Monitoring

  • Operational System Digitalisation

  • Pipe Temperature and Pressure Monitoring

  • Pump Pressure Monitoring

  • Rain Level Monitoring

  • Remote Diesel Tank Level Monitoring

  • Soil Moisture Monitoring

  • Trucks Overload Monitoring

  • Underground Water Pipeline Pressure Monitoring

  • Waste Liquid Delivery Management

  • Wastewater Pipe Pressure Monitoring

  • Water Filter Performance Monitoring

  • Water Quality Monitoring

  • Water Supply Monitoring

  • Water Tank Level Monitoring

  • Water Wells Level Monitoring

Key pre-configured Industrial IoT solutions

Main Industrial IoT Sensors: 

  • PTS2: Industrial Pressure (0.2bar to 1,000bar)

  • PTC2: Corrosive Resistant Pressure

  • PTD2: Pressure Sensor with Built-in Temperature Sensor

  • PTDH2: High Temperature Pressure and Temperature Sensor

  • PTG2: Pressure with Built-in GPS

  • PTS3: IP68 Pressure Sensor

  • PTF2: Flush Type Pressure Sensor

  • PTF2: Thich film Flush type Pressure

  • PTE2: Earth Pressure Sensor

  • PDS2: Industrial Differential Pressure Sensor

  • PDG2: DP with Built-in GPS

  • PDT2: Ultra Low Range Air Pressure and Temperature

  • PLS2: Submersible Level (1m to 200m range)

  • PLC2: Corrosive Resistant Level (Titanium)

  • PLD2: Level Sensor with Built-in Temperature

  • PLG2: Level Sensor with Built-in GPS

  • PLS3: Submersible Level Sensor with IP68 Housing

  • PLM2: Well Level Sensor (15.8mm Sensor Head, 2in Housing)

  • PLMD2: Well Level and Temperature Sensor

  • TTS2: Industrial Temperature Sensor

  • TTG2: Temperature Sensor with Built-in GPS

  • TTS3: Temperature Sensor with IP68 housing

  • TTS2: Pipe Temperature Sensor

  • DUS3: IP68 Ultrasonic Level Sensor

  • DRC3: IP68 Corrosive Radar Sensor (8m and 30m range)

  • FMS2: Industrial Water Meter Interface

  • CSD2: Conductivity Salinity and Temperature sensor

  • CTR2: Turbidity and Temperature Sensor

  • CPH2: pH, ORP and Temperature Sensor

  • CDO2: Dissolved Oxygen and Temperature Sensor

  • MSS2: Soil Moisture Sensor

  • MAS2: Outdoor Humidity Sensor

  • MRS2: Rain Sensor (Tipping bucket)

  • ECP2: Cathodic Protection Sensor

  • RS1-4/20: Single channel 4-20mA Interface

  • RS1-P: Single channel Pulse Interface

  • RS1-SDI: Single channel SDI-12 Interface

  • RS1-M: Single channel Modbus Interface

  • RS1-Pt: Single channel Pt100 Interface

  • RM1: Multi-channel Interface

  • RM4-4/20: Multi-channel Interface (4 x 4-20mA Sensor)

  • RM4-Pt: Multi-channel Interface (4 x Pt Sensor)

  • RM4-M: Multi-channel Interface (4 x Modbus)

  • RM4-mV: Multi-channel Interface (4 x mV Sensors)

  • RM4-Pulse: Multi-channel Interface (4 x Pulse Counter)

  • RM4-0/10: Multi-channel Interface (4 x 0-10V Sensor)

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