Tunnel illuminance sensor supplier
We offer high-precision tunnel illuminance sensor solutions that are widely used in intelligent transportation and tunnel lighting control systems. Based on the principle of illuminance measurement and incorporating photodiode photoelectric conversion technology, our products enable stable and accurate ambient light monitoring. In the following sections, we will provide a comprehensive overview of the product’s structure, key features, and typical applications to help you gain a deeper understanding of the performance advantages and practical value of our tunnel illuminance sensors.
- Range: 1500-25000K
- Ambient temperature: -40~65℃
- Output: 1 4-20mA, 1 RS485, 1 relay alarm output
- Supply: 220V±15%VAC, 50HZ
- Total Weight: 2.5kg
Price: $259–$279
บทนำ
A illuminance sensor is a precision device designed to measure Illuminance in and around tunnels, enabling automatic lighting control for safer driving and energy efficiency. It works by using a Photodiode to convert light into electrical signals, which are processed to match human eye sensitivity. Widely applied in highway and railway tunnels, urban underpasses, and intelligent traffic systems, it provides stable, real-time data for smart lighting and safety management.
Structure tunnel illuminance sensor
- Optical Sensing Unit
Responsible for receiving ambient light; typically equipped with filters to comply with illuminance measurement standards. - Photodiode
The core light-sensitive component that converts light signals into electrical signals. - Signal Processing Circuit
Amplifies, filters, and temperature-compensates the raw electrical signal to ensure data stability and accuracy. - Data Output Module
Provides standard communication interfaces (such as RS485) to facilitate system integration. - Protective Housing
Designed using high-strength, corrosion-resistant materials, featuring waterproof and dustproof capabilities (e.g., IP66). - Mounting Bracket and Adjustment Mechanism
Supports flexible installation and angle adjustment to accommodate various tunnel entrances or internal environments.

รายละเอียดแสดง
To meet the lighting control requirements of smart tunnels, the tunnel illuminance sensor is composed of multiple high-performance components that can continuously provide reliable illuminance data even in high-humidity and high-dust environments.
ข้อมูลจำเพาะ
This illuminance sensor features a wide measurement range and excellent environmental adaptability. It supports multiple signal output formats, facilitating system integration and remote monitoring. Designed with a high protection rating, the device operates reliably in complex environments ranging from -40°C to 65°C. With its compact design and easy installation, it meets the high-reliability and high-precision requirements of tunnel lighting control and intelligent transportation systems.
พารามิเตอร์
| Item | ข้อกำหนด | Item | ข้อกำหนด |
|---|---|---|---|
| Type | other | Accuracy Class | Standard Accuracy |
| Voltage | 240 V | Protection Class | IP66 |
| Warranty | 1 Year | Customized Support | OEM, ODM, OBM |
| Power | other | ความถูกต้อง | 3% |
| Brand Name | ยี่นไถ | Place of Origin | Hebei, China |
| Range | 1500-25000K | Measuring Angles | Vertical ≥20°; Horizontal ≥20° |
| ความถูกต้อง | 3% | Ambient Temperature | -40-65°C |
| Ambient Humidity | 0-100 %RH (non-condensing) | ผลลัพธ์ | 14-20mA, 1 RS485 |
| Supply | 220V±15%VAC 50HZ | Protection Level | IP66 |
| Total Weight | 2.5kg | Dimensions | 251 x 190.5 x 94mm |
Features tunnel illuminance sensor
Stable Performance
Ensures consistent long-term data, reducing maintenance and calibration needs.
Strong Anti-Interference
Possesses excellent resistance to electromagnetic and environmental interference.
Long Lifespan
Features highly durable core components, making it suitable for continuous, long-term outdoor use.
Robust Structure
Sturdy housing withstands harsh tunnel conditions and impacts.
Seamless Integration
Features standardized interface designs that allow for easy integration with various control systems.
Simple Maintenance
Modular design enables quick inspection and reduces operating costs.
Applications illuminance sensor
Tunnel illuminance sensors are widely used in various tunnels and intelligent transportation systems. They are primarily used to monitor ambient light levels in real time, enabling automatic adjustment of tunnel lighting to enhance traffic safety and improve energy efficiency.

Highway Tunnels
Automatically adjust lighting at entrances and inside the tunnel to ensure driving safety.

Railway Tunnels
Monitors lighting conditions to optimize the visual environment for trains passing through tunnels.

Urban Underpasses
Intelligently controls lighting systems to improve visibility for pedestrians and vehicles.

Intelligent Transportation Systems (ITS)
Integrates with traffic management platforms to optimize energy consumption and enable safety monitoring.

Bridges and Culverts
Provides auxiliary lighting control to adapt to day-night cycles and weather changes.

Research and Monitoring Projects
Delivers precise lighting data for traffic and lighting research and analysis.
custom illuminance sensor
To meet the specific requirements of various tunnels and intelligent transportation systems, the illuminance sensor offers flexible customization options, including measurement range, output interface, power supply method, protection rating, and mounting method.
Customization Options
- Measurement Range: The appropriate illuminance measurement range can be selected based on the tunnel’s lighting conditions, supporting precise monitoring in both high-brightness and low-light environments.
- Output Interfaces: Multiple signal output options are available (e.g., 4–20 mA, RS485, relay alarms) to facilitate integration with various control systems.
- Power Supply Options: Supports multiple power supply modes, including 220 V AC and 24 V DC, to meet the diverse power requirements of tunnel environments.
- Protection Rating: The housing offers protection ratings up to IP65/IP66/IP67; select the appropriate dust and water resistance level based on the installation environment.
- Mounting Options: Multiple mounting options are available, including brackets, suspended mounting, or wall mounting, ensuring convenient deployment in various tunnel structures.
- Functionality Expansion: Additional features such as temperature and humidity monitoring, remote data transmission, and alarm linkage can be added to enhance the system’s intelligence.

Illuminance Sensor ผู้ผลิต และผู้จัดหา
Yantai Sensor is a professional illuminance sensor manufacturer and supplier, specializing in high-precision tunnel light monitoring sensor solutions for intelligent transportation systems, highway tunnels, and urban underground passages. Our sensors are designed to accurately measure environmental light levels, providing stable and reliable data for tunnel lighting control and energy-efficient illumination management.
With strong independent R&D capabilities, advanced manufacturing facilities, and a dedicated environmental testing laboratory, each sensor undergoes strict quality checks, including temperature, humidity, vibration, and long-term performance tests. Certified with CE, ISO, and RoHS, we offer reliable products along with flexible OEM/ODM services to support global tunnel lighting and smart traffic monitoring projects.






























