4G IoT Smart LED Street Light with NEMA & ZHAGA Controller

Smart City Lighting Made Simple

Transform urban infrastructure with Solarens 4G IoT Smart LED Street Lights. Designed for municipalities, facility managers, and smart city integrators, our intelligent lighting solution seamlessly connects street lighting fixtures to a Central Management System (CMS) via high-speed LTE networks.

By integrating premium LED luminaires with advanced NEMA or ZHAGA standard controllers, this system enables real-time remote control, automated dimming schedules, precise energy metering, and proactive fault detection. The result is a dramatic reduction in energy consumption and operational costs, while significantly improving public safety and maintenance efficiency.

Solution Topology: How It Works

The Solarens Smart Lighting Solution operates on a robust and scalable IoT architecture.

The individual street lights are equipped with either a NEMA 7-pin or a ZHAGA 4-pin controller. These controllers communicate directly with local cellular base stations using LTE FDD or TDD networks, eliminating the need for complex gateway installations. The base stations then transmit the data securely via TCP protocol to the cloud-based server. Finally, city operators can monitor and manage the entire lighting network through an intuitive CMS dashboard accessible on PCs, tablets, or smartphones.

 Core Features of the 4G IoT System

The integration of 4G connectivity brings unprecedented control to outdoor lighting infrastructure.

Remote Control and Dimming
Operators can execute instant on/off commands or adjust brightness levels remotely. The system supports DALI (including DALI-2 and D4i) and 0-10V analog dimming protocols, ensuring compatibility with a wide range of LED drivers. Automated tasks can be scheduled based on time, astronomical clocks, or integrated photocell sensors.

Energy Metering and Analytics
Accurate energy management is crucial for smart cities. The controllers provide real-time measurement of AC voltage, current, active power, power factor, and cumulative energy consumption with an accuracy margin of 3%. This data is essential for assessing luminaire lifespan and verifying energy savings.

Proactive Fault Detection
Maintenance shifts from reactive to proactive. The system continuously monitors for overcurrent, overvoltage, undervoltage, and low power factor conditions. If a luminaire fails, the controller instantly transmits an alarm to the CMS, allowing maintenance crews to pinpoint the exact location and nature of the issue before residents report it.

Advanced Customizations
For enhanced functionality, the controllers can be equipped with optional GNSS (GPS/Beidou) modules for automatic geographical positioning, and tilt sensors with a customizable 30° alarm threshold to detect pole damage from accidents or extreme weather.

Compatible Solarens Luminaires

Our smart controllers integrate flawlessly with Solarens high-performance LED street lights.

The ST22G Adjustable High-Brightness LED Street Light and the ST22D High-Efficacy LED Street Light are fully compatible with both NEMA and ZHAGA receptacles. These luminaires offer exceptional luminous efficacy of up to 200 lm/W, IP09 waterproof ratings, and IK09 impact resistance, making them the perfect hardware foundation for your smart city lighting network.

Frequently Asked Questions

1. What is the difference between NEMA and ZHAGA controllers?
NEMA 7-pin controllers are the traditional North American standard, typically mounted on top of the luminaire and handling high-voltage AC power directly. ZHAGA 4-pin (Book 18) is a newer, more compact European standard that operates on low-voltage DC power supplied by the LED driver, allowing for smaller enclosures and often mounted on the bottom of the luminaire for better sensor integration.

2. Do I need to install local gateways to use these 4G controllers?
No. Unlike Zigbee or LoRaWAN systems, our 4G LTE controllers communicate directly with existing cellular telecom towers. This plug-and-play approach eliminates the need for intermediate gateways, significantly reducing installation complexity and upfront infrastructure costs.

3. Can the system still operate if the 4G network goes down?
Yes. The controllers feature a built-in Real-Time Clock (RTC) and internal memory. Once a dimming schedule or operating profile is downloaded from the CMS, the controller will continue to execute the pre-programmed tasks independently, even during temporary network outages.