Discover how Sresky’s Delta S Smart Solar Lighting System delivers grid-free reliability, durability, and IoT-driven efficiency to remote areas and critical infrastructure projects.

Lighting Up Where the Grid Can’t Reach

Access to reliable power in remote areas and infrastructure projects—such as highways, bridges, mines, or rural communities—has always been challenging.
Traditional lighting systems face high costs, complex maintenance, and environmental risks.

Sresky’s Delta S Smart Solar Lighting Series is built for these challenges: an IoT-enabled, self-sufficient lighting solution offering security, sustainability, and long-term savings.

Why Choose Smart Solar Lighting for Remote and Critical Projects

Zero Grid Dependency

Delta S operates entirely on solar energy.
Equipped with up to 22V/154W monocrystalline panels and 810Wh lithium-ion batteries, it delivers continuous illumination—even in low sunlight areas.

In rural African communities, Delta S lights up schools, clinics, and public spaces without unstable grids or expensive generators, reducing operating costs and improving life quality.

For highways in mountainous regions, it accelerates project timelines by eliminating the need for cabling.

Built for Extreme Conditions

Operating reliably between -20°C to 60°C, Delta S is IP65/IK08 rated against dust and impact.
A dual rain sensor automatically adjusts the color temperature (5700K to 3000K) during storms for better visibility and safety.

From dusty mining sites to coastal highways resisting salt spray, Delta S ensures continuous operation in harsh environments.

Autonomous Operation, Minimal Maintenance

Delta S features a smart battery management system (BMS) for protection against overcharge/discharge and fault code diagnostics for quick troubleshooting.

At a desert mining site, Delta S helped identify battery issues quickly, minimizing downtime.
With LEDs lasting over 50,000 hours, maintenance becomes almost unnecessary—ideal for remote deployments.

Key Features That Make Delta S Stand Out

Superior Solar Efficiency

Powered by high-efficiency OSRAM LEDs (up to 230 lm/W) and adjustable solar panels, Delta S maximizes energy harvesting.

Example:
The SSL-815S model offers 15,000 lumens and covers up to 31 meters—perfect for highways, bridges, and rural community spaces.

Smart IoT Integration for Remote Management

Stay connected even without a grid:

• Remote Control: Adjust modes using a handheld device or IoT platform.

• Real-Time Monitoring: Track panel performance, battery charge, and faults.

• Predictive Maintenance: Anticipate battery or component issues before they happen.

For global B2B customers, this means managing multiple sites remotely with ease.

Durable, Practical Design

• Aluminum-PC Construction: UV- and corrosion-resistant.

• PIR Motion Sensor: 120° detection and 12m range for intelligent dimming and energy saving.

• Modular Installation: Quick setup on poles 8m–15m tall, with no special tools needed.

Case Study: Delta S on a Mountain Highway

Challenge: Frequent power outages and harsh winters.

Solution:
Deployment of the Delta S SSL-812S model (12,000 lumens, 675Wh battery) achieved:

• Over 3 days of backup lighting during rainy seasons.

• 30% energy savings through intelligent dimming.

• Zero cabling costs, cutting initial investment and boosting ROI.

Result: Reliable, resilient, and cost-effective lighting in one of the harshest environments.

Why Global B2B Clients Trust Delta S

Flexible Scalability

From 6,000LM to 15,000LM models, Delta S adapts to any project—from rural communities to multi-kilometer highways.

International Compliance

Certified for global standards, Delta S helps customers stay compliant across markets—ideal for multinational projects.

Exceptional Cost-Effectiveness

With minimal maintenance and long LED lifespans, initial investments are often recovered within just a few years, through massive energy and maintenance savings.

Building Smarter, Stronger Infrastructure with Delta S

In remote areas and critical projects, Sresky’s Delta S series isn’t just about lighting—it’s about creating smarter, sustainable infrastructure.
Combining solar efficiency with IoT intelligence, Delta S ensures reliability where conventional systems fall short.

Technical Details at a Glance

• Solar Panels: Monocrystalline silicon, up to 22% conversion efficiency.

• LED Beads: OSRAM, up to 230 lm/W, over 50,000 hours lifespan.

• Battery Management: Intelligent BMS with real-time health monitoring.

Market Trends and Future Outlook

The global solar lighting market is expected to grow by 15% annually over the next five years.
Sresky is pushing the future forward with smarter sensors, more efficient energy management, and AI integration for next-generation solar lighting solutions.