Your Trusted Manufacturer in Outdoor Street Lighting Solutions
(Photocell & Photocontrol)
At the LONG-JOIN, we can provide a set of lighting controller solutions and are good at solving some questions of before-after service. as well as specializing in the largest 2 categories of led lighting application areas in the world. eg Zhaga series and NEMA/ANSI series. without worry, we capability to offer mass products and pre-booking a few special samples within work time. this is especially true about our product features both a well-brand reputation and good testimonials from oversea customers.
Our Main Product
Photocell Detailed Information Here
Why Choose US?
Founded in 1996 by visionary entrepreneur Huang Jianxiang, LONG-JOIN has grown into a leading brand in intelligent lighting technology. Today, the LONG-JOIN Group includes companies such as Shanghai Longjoin Electrical and Mechanical Technology Co., Ltd. and Zhejiang Umelink Intelligent Technology Co., Ltd.
We are committed to the development of light photocontrols and related accessories, while advancing digital integrated system control. Our two key product lines — the modern lighting management system (UM9000) and the smart light pole system (UM9900) — represent the future of intelligent urban infrastructure.
These solutions not only enable smarter living with real-time local and remote lighting control, but also collect environmental data to provide valuable support for urban management and decision-making.

History
For more than 20 years, Shanghai Long-join Intelligent Technology Co., Ltd. focuses on processing and manufacturing and intelligent street lighting controller accessories.
CO-Brand
Our customers span Europe, the United States, and beyond. Our products have illuminated streets worldwide.
Price & Payment
We offer gradient quotations based on your order quantity. Our payment and cooperation methods are designed to meet your needs
New Series
Get the global EU zhaga book 18 certifications in 2019, and actively joined the zhaga alliance association. referable look for the website: zhagastandard.org/products.
Certificate
There is a number of other country market certification qualifications. such as UL,CE,RoHS,CB,FCC, and zhaga boo18, etc.
Service
Our professional sales team excels in communication and problem-solving. We're here to understand your needs and provide precise solutions.
Research
Our factory focus on technology research and development and innovation, and accumulate more than 30 invention and utility model patents.
Equipment
Our factory has complete product line and leading production to ensure the needs of large users.
Application Details

1. Pre-installed Smart Light Control Combination Kit: Rainy Cap(Shorting Cap) & Receptacle Socket

2. Smart light control system application accessory combination: Photocontroller Cover &Base

3. Other opitional Wireless Smart Lighting Control Switches
Hot Products

All In One-Stop Customize Twist Lock Photoconrol And IP54,IP65,IP66
- 1.Rated Voltage: Customize
- 2. On / OFF Lux Level: Customize
- 3. IP Rating: IP54, IP65, IP67
- 4. Compliant Standard: CE, ROHS, UL
The photocontroller 2 series is applicable to control the street lighting, garden lighting, Landscape light and highway lighting automatically in accordance with the ambient natural lighting level.

JL-700W Zhaga Book 18 Zhaga Connector From Brand OEM/ODM Manufacturer Longjoin
- 1. Product Model: JL-700W
- 2. Material: PBT and Add UV Stabilizer
- 3. Leads Gauge: optional customize
- 4.Rated impulse Voltage: 0.8kv
Compliant Zhaga Book 18 Standard is applicalbe to develop standard devices used for roadway lighting, area lighting, or occupancy lighting, etc.

Customize Black / Gray /WhiteTransparent Photocell Sensor Accessories Dome / Shell
- Product Model : YS800076/JL-241J
- Material: PC/PP (Customer Requirement)
- 3. Color:gray/black
- 4. Standard: UL,CUL
OEM/ODM Design lighting luminaires Photocell Controller fitting. eg wall pack light, Led barn light, Factory light, lawn light etc.
Production Process
Inside the Making of Reliable Photocontrols
The production of photocontrols combines precision engineering with strict quality standards. From sensor selection to circuit assembly, every step is designed to ensure accuracy, durability, and safety in outdoor environments.
From Assembly to Assurance: How Quality Photocells Are Built



Each unit undergoes rigorous testing—covering temperature cycles, waterproofing, and electrical reliability—before leaving the factory. This process guarantees that every photocontrol meets international certifications and delivers consistent, long-term performance.



Exhibitons
Our gallery




We received from customers at the trade show has provided us with valuable insights and direction for our future international expansion. We will use this opportunity to continuously improve our products and services, and provide even better solutions to our global customers.
The trade show was extremely important for our company; it not only allowed us to showcase our products and services comprehensively, but also yielded significant results.





Headquater and Leader Team


Certificate & Patents



Knowledge of Photocell Industry

Photocell Solutions for Advertising Lighting: Smarter, Safer, and More Efficient Outdoor Ads
Outline Your billboard lights stay on all night long. The results are hefty power bills. Manual switching is inconvenient and prone to error. What if

In-Depth Analysis of JL-215C Photocell Power-On Flicker: Technical Explanation and Solutions for Stable Smart Street Lighting
Smart cities rely on an intelligent street lighting system. This helps ensure energy efficiency and safety. But what happens when the lights flicker at power-on? Many customers have noticed a brief flash with the JL-215C light sensor before it enters normal operation. This article explores:
-Why does that flicker happen
-What it means for your project, and
-How to minimize its impact.

How Long-Join Photocontrols Combat Voltage Instability from Transformers: 5 Solutions That Keep Lights On
Outline Streetlights are supposed to turn on when it’s dark — but what happens when transformers fail? Voltage drops, lights flicker, and entire streets can

Your Brand, Your Control: A Complete Guide to Logo Printing on Photocell Housings and Receptacles
Outline Branding isn’t just about big logos on packaging or ads. In the outdoor lighting industry, even the smallest part speaks for your brand. A

Precision Photocell Control for Private Pool Pumps: Why the JL-126 Is the Ultimate Niche Solution
Outline When people think of a light controller, they often picture streetlights or outdoor security lamps. But did you know the same technology can transform

Advancing Smart Photocell Technology in the Growing Light Sensor Market: A Comparative Technical Analysis
Outline The global light sensor market is on a rapid growth path. In 2024, it reached $3 billion. Forecasts show strong expansion ahead. Advances in

Why “One Photocell per Light” Is the Smarter, Long-Term Choice for Street Lighting Projects
Outline Street lighting is at the heart of modern urban infrastructure. But how should cities control it — with one central lighting control or one per

The Rise of Plug-and-Play Outdoor Photocells: Why Online Retailers & Homeowners Are Driving the Demand
Outline Outdoor lighting is no longer just about big city streets and municipal projects. More homeowners and small businesses are turning to photocell switches. They
CONTACT US
FAQ
Q1: Are you a Factory?
Yes. We are the manufacture factory, and our factory has specialized in industrial electronic products for nearly 25 years.
Q2: Do you have stock products to sell?
No, We produce these electronic products accorded to the customer’s requirement, It also means material, density, shape, size, design, the quantity will depend on what you.
Q3: Does the electronic product can be printed a LOGO?
Yes, we can print the logo as per your specific requests.
Q4: What advantages do you have?
We are the Factory, and we have the ability to carry out a production schedule for punctual delivery. More importantly, We can provide free samples for quality evaluation.
Q5: If I want to get a Quotation, what information needs to be provided to you?
In general, Type and Quantity.