Longjoin Electronics: A Professional Photocell Manufacturer Committed to Providing Efficient and Intelligent Solutions for Various Clients
Introduce
Over the last twenty years, Longjoin Electronics has grown. Today, it stands among China’s top photocell makers at home and abroad. From our base in Haiyan, Zhejiang, we supply advanced photocell solutions, including dusk-to-dawn lighting sensors, smart street light photocells, and intelligent control systems. Our mission? To light the future more intelligently, one photocell at a time.
With certified manufacturing, in-house R&D, and a global client base, our work goes beyond hardware. We focus on tailored solutions that ensure efficiency, automation, and sustainable urban lighting. Now let’s dive deeper—question by question—into what makes Longjoin unique.

What Makes Longjoin a Leader Among Photocell Manufacturers?
In a crowded market, Longjoin goes beyond just selling lights. We craft truly reliable and smart lighting solutions that think ahead for you. Clients around the world trust our photocells. They do more than work: they last, adapt, and boost energy savings.
Longjoin is not just a factory—we’re a technology-driven brand. Our photocell sensor solutions are designed with the future of smart cities in mind.
Feature | Details |
Experience | 20+ years of R&D, production, and customization |
Certification | UL, CE, ISO Certified |
Facility Size | 15,300 square meters |
Smart Tech Support | ZigBee, LoRa, NB-IoT, WiFi |
Export Markets | United States, Europe, Asia, etc. |
Major Partners | Philips, Cree, Tork |
Our ability to deliver fast, customize freely, and innovate constantly is why so many choose Longjoin as their preferred photocell for street light partner. Learn more about our capabilities on the factory page.
How Does Longjoin Ensure Product Innovation and Technical Leadership?
Technology changes fast—so do lighting demands. Innovation is more than a department at Longjoin. It is a mindset. Our R&D team is always finding smarter ways to light streets and factories. We also work to brighten campuses and cities more efficiently.
Our in-house R&D team is made up of industry veterans and creative engineers. They don’t just keep up—they push ahead.
We integrate advanced photoelectric sensor features like:
Through continuous iteration and testing, we enhance the adaptability of every light sensor photocell switch. If you need a basic photocell sensor or a smart street-light controller, we have a next-gen solution. It works with any IoT system smoothly.
Want to see our latest innovations? Visit our product center.

What Types of Photocells Do We Offer?
Picking the right photocell can feel tricky. You might not know the difference between twist-lock, wire-in, or smart photocells. That’s where our expert team steps in. We help simplify decisions with versatile product lines designed for real-world scenarios.
Confused about the type of photocell light switch you need? We’ve made it simple. Our product line covers:
Type | Description |
Twist-lock photocells | Standard fit with NEMA 7-pin receptacles for easy maintenance |
Wire-in photocells | Cost-effective and compact design for internal lighting fixtures |
Smart photocells | Built for smart city deployment with remote control and feedback functions |
We also offer Zhaga socket and NEMA socket options to ensure maximum compatibility.
If you’re unsure what suits your project, our team can help you customize. We provide full OEM and ODM support.
How Does Longjoin Meet High Volume Demands?
Supplying thousands of high-performance lighting control units to clients worldwide takes more than scale—it takes precision, speed, and quality assurance. At Longjoin, our factory operations are optimized to deliver reliability at every step.
Handling big orders with tight deadlines is no problem for us. Our production facility is fully automated and quality-controlled.
Advantage | Details |
Production area | 15,300 sqm with high-speed SMT lines |
Daily production capacity | 20,000+ units |
Quality testing | 100% inspection with IP65/UL standard testing |
Delivery reliability | Fast turnaround with stable raw material sourcing |
This means if you’re a lighting manufacturer or smart street lighting contractor, you can depend on us for timely and consistent delivery of photocell sensor LED street light units.

How Do We Serve Different Client Needs?
Clients have different needs. They set their own budgets and timelines. You might be a small-scale trader or a government contractor on a smart city project. We have service structures that flex to meet your demands.
Are You a Trader or Wholesaler?
Staying profitable in wholesale markets means speed, availability, and value. Our systems support fast-moving businesses with bulk orders and practical support:
- Competitive pricing for large batches
- Instructional manuals, installation videos, and datasheets
- Fast logistics for urgent projects
Are You a Lighting Equipment Manufacturer?
Precision and compatibility are key in manufacturing. We offer custom modules and long-term partnerships to align with your technical needs:
- Custom-fit light photocell sensormodules
- Ongoing technical consultation
- Certified and tested components ready for assembly lines
Are You a Smart Street Lighting Contractor?
Smart cities need smart systems. Our street lighting solutions go beyond sensors—they offer scalable infrastructure:
- Turnkey IoT-compatible photocell controlsystems
- Seamless integration with smart poles and control platforms
- Remote management capabilities for energy efficiency and maintenance
Discover how we tailor services for each segment on our solutions page.
Why Do Global Clients Trust Longjoin?
The market is filled with promises. We deliver proof. We earn trust by being honest. We also make things clear and work to keep you happy.
Our products meet global standards. They excel in performance and reliability. Clients trust us for:
Our photocontrol receptacle and dusk to dawn photocell sensor products currently account for 50% of the U.S. market. Our long-term collaborations with companies like Cree and Philips are a testament to our credibility.
What Is Longjoin’s Vision for the Future?
Urban lighting is not just about visibility anymore. It is also about data, safety, and sustainability. At Longjoin, we envision a world where every light point is smart, efficient, and connected.
We don’t just manufacture—we lead. Our goal is simple. We want people everywhere to use smart light controls. We are investing in AI-powered analytics and green energy applications. Our next-gen photosensor systems adapt in real time to environmental changes.
As urban development continues, we’re ready to help cities become smarter, greener, and more connected—one light at a time.
Conclusion
Longjoin Electronics combines innovation, precision manufacturing, and client-first service. Our photocells power smart streetlights across continents. They support green energy goals and keep urban areas lit.
When you pick Longjoin, you aren’t buying a photocell switch. You are getting reliability, smart control, and a brighter future.
External Links:
●https://www.digi.com/solutions/by-technology/zigbee-wireless-standard
●https://en.wikipedia.org/wiki/LoRa
●https://en.wikipedia.org/wiki/Narrowband_IoT
●https://www.ul.com/solutions
●https://en.wikipedia.org/wiki/CE_marking
●https://www.iso.org/home.html