ILS-E20-4 Millimeter-Wave Radar Vehicle Detector
E20-4
Millimeter-wave radar vehicle detector—An all-weather, anti-interference, cost-effective barrier guardian.
The E20-4 is a vehicle detection radar based on 79 GHz high-frequency millimeter-wave technology, specifically designed to replace traditional inductive loop detectors and infrared beam sensors. Leveraging the millimeter wave’s exceptional penetration capability, this radar maintains stable detection performance even in environments characterized by rain, snow, dense fog, and dust.
As the “cost-reduction and efficiency-enhancing” model in the E20 series, the E20-4 offers a highly competitive price and excellent overall performance. It’s easy to install (no need to cut the road surface), and not only enables precise control of the barrier gate’s drop-bar logic, realizing the intelligent anti-smashing function of “barrier drops when a vehicle passes but remains raised when a pedestrian walks by,” but also serves as a vehicle-counting and trigger sensor, making it widely applicable to parking lots, toll stations, and entrances/exits of corporate campuses.
Keywords:
Category:
Detection
E20
Overview
Millimeter-wave technology penetrates rain, fog, wind, and snow.
Compared to lasers and vision systems, the greatest advantage of millimeter-wave radar lies in its wavelength characteristics. The E20-4 can easily penetrate heavy rain, heavy snow, dense fog, and dust storms, and is unaffected by variations in light intensity. In regions where adverse weather conditions are frequent, it represents a more robust alternative to optical sensors.
Cost reduction and efficiency enhancement—The perfect replacement for inductive loop sensors.
No need to cut into the road surface or close lanes—installing just one E20-4 takes only a few dozen minutes. Not only does this eliminate costly civil engineering construction expenses, but it also avoids the high-frequency maintenance costs caused by coil failures due to road settlement. It’s truly the best value for money in old infrastructure renovation projects.
Smart anti-crushing—eliminate “crushing cars and people.”
The E20-4 not only detects vehicles but also recognizes human bodies. When a vehicle is parked under the barrier gate or a pedestrian passes by, the radar continuously outputs a hold signal, preventing the barrier arm from dropping unexpectedly. With its rapid response speed and adjustable detection range, this device makes entrance and exit management safer and more user-friendly.
Core features
- Detection distance: 1–6 m adjustable
- Response time: ≤50ms
- Vehicle capture rate: ≥99.9%
- Installation method: Side-mounted (barrier gate housing or post)
- Debugging mode: Mobile app (Bluetooth connection)
- Output interface: Relay (Normally Open/Normally Closed)
- Protection rating: IP67
The “All-in-One Guardian” for Parking Lots and Toll Stations

The E20-4 is the standard configuration for modern parking management systems. Whether it’s used in commercial parking lots, residential community entrances and exits, or ETC/MTC lanes on highways, it can be directly installed onto the barrier gate housing, replacing inductive loop sensors to perform both “triggering” and “anti-smashing” functions. Even in adverse weather conditions characterized by heavy rain or dense fog, it continues to accurately detect every passing vehicle, ensuring the system operates 24 hours a day with minimal human intervention.
Simple, economical, and durable.

high-frequency band, finer resolution
Compared to the older-generation 24 GHz radar, the ILS-E20-4 features higher resolution. Frequency band.
This means it can more clearly distinguish between adjacent objects, effectively reducing false alarms. Whether it’s a large truck, a small car, a motorcycle, or a pedestrian, the E20-4 can accurately capture their reflected signals, providing stable and reliable presence detection and eliminating the common issues with traditional radar—such as “failing to detect children” or “mistaking roadside debris for actual objects.”

Mobile phone Bluetooth connection—debugging without climbing high.
On-site debugging doesn’t require climbing ladders to plug in cables, nor does it necessitate carrying around a bulky laptop.
The E20-4 comes with a built-in Bluetooth module. Simply stand near the device and open the mobile app to view the radar detection range in real time, adjust sensitivity, and set the delay time for the barrier arm to lower. The intuitive, visual user interface allows even beginners to complete the setup within 5 minutes, significantly boosting delivery efficiency.

Environment self-learning—install and forget.
The environmental conditions of each toll plaza are different. E20-4 features an environment-background self-learning function.
After power-on, it automatically scans and filters out fixed background interference such as guardrails, pillars, and speed bumps. During operation, it can also automatically compensate for environmental changes without requiring frequent manual calibration, truly delivering a maintenance-free experience that’s “set it and forget it.”

Save money and hassle—your first choice for bulk purchases.
While ensuring core functionality, the E20-4 has optimized hardware costs.
Compared to laser detectors, it’s more affordable; and compared to inductive loop sensors, it significantly reduces labor costs and machine-hour expenses for cutting equipment. For parking lots with hundreds or even thousands of lanes, or large-scale barrier gate upgrade projects, the E20-4 is the optimal solution that strikes the right balance between performance and budget.
YINTAILI All-round Services
APP Operation Guide
We provide detailed video tutorials and an app user manual to help frontline installers get started easily.
OEM/ODM Customization
We offer customized LOGO design, shell color options, and protocol modification services for barrier gate manufacturers, enabling you to create your own exclusive products.
Large stock available
We maintain a stock of 10,000 units ready at all times—ship immediately upon order to fully ensure your project schedule.
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Precise Vehicle Classification at Highway Toll Stations: Enhancing Traffic Efficiency
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E20-4
0101132
≤50ms
6 meters
2-channel relay output
-40~+85℃
IP65
120mm (length) × 100mm (width) × 60mm (height)
E20-3
E20-3 Type
-
<50ms
9 meters
20mm
2-channel relay output
-30~+70℃
IP67
130 mm (length) × 107 mm (width) × 1008 mm (height)
-
ETC
-
0–80 km/h
30 meters
±20 cm
Ethernet, RS232, IO
-30℃ to +70℃
IP67
-
Highway toll station
| 产品图片 | 订货号 | 产品线 | 产品名称 | 工作模式 | 扫描角度 | 扫描频率 | 分辨率 | 测量距离 | 10%反射率检测范围 | 精度 | 输入输出接口 | 抗光干扰 | 工作温度 | 供电电压 | 高低电平 | 功耗 | 防护 | 外壳尺寸 | 外壳材料 | 线长 | 适用场景 | 资料下载 | 询价 | 对比 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
E20-4 |
ILS-E20-6 Millimeter-Wave Radar Vehicle Detector |
Standard |
|
≤50ms |
99.95% |
6 meters |
6 meters |
|
2-channel relay output |
80,000 Lux |
-40~+85℃ |
AC 220V |
|
5W |
IP65 |
120mm (length) × 100mm (width) × 60mm (height) |
Alloy |
|
|
|||||
|
E20-3 |
ILS-E20-3 Laser Vehicle Detector (a toy) |
Standard |
- |
<50ms |
99.99% |
9 meters |
9 meters |
20mm |
2-channel relay output |
80,000 Lux |
-30~+70℃ |
DC 24V ±10% |
- |
48W |
IP67 |
130 mm (length) × 107 mm (width) × 1008 mm (height) |
Alloy |
- |
- |
|||||
|
ETC |
ETC Lane Laser Vehicle Separator |
- |
- |
0–80 km/h |
≥99.9% |
30 meters |
30 meters |
±20 cm |
Ethernet, RS232, IO |
80,000 Lux |
-30℃ to +70℃ |
AC 220V |
- |
- |
IP67 |
- |
Alloy |
Buy separately |
Highway toll station |
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