Vehicle Loop Detector Single Channel – Parking Lot Control | 110V/220V
Vehicle Loop Detector Single Channel – Parking Lot Control | 110V/220V
Single Channel Vehicle Loop Detector for Intelligent Parking Lot Systems
Upgrade your parking facility or access control system with this reliable Single Channel Vehicle Loop Detector (Model 120B) by LUCKING DOOR. Designed for seamless integration into automated car parking barriers, gate controllers, and traffic management systems, this CE-certified inductive loop detector delivers fast, accurate vehicle detection with minimal setup. Made in Mainland China.
Why Choose This Vehicle Loop Detector?
- Versatile Power Input: Compatible with AC 220V, AC 110V, and DC 24V power supplies — ideal for a wide range of commercial and residential installations worldwide.
- Ultra-Fast Response: 10ms reaction time ensures near-instant vehicle detection for smooth, uninterrupted traffic flow.
- Adjustable Sensitivity: Four sensitivity levels let you fine-tune performance based on loop size, vehicle type, and environmental conditions.
- Wide Frequency Range: Operates from 20 kHz to 170 kHz, minimizing interference between adjacent detectors.
- Relay Output: Rated at 240V/5A relay output for easy integration with gate barriers, traffic lights, and automated parking systems.
- Durable & Weather-Ready: Operating temperature range of -20°C to +65°C makes it suitable for both indoor and outdoor installations.
- LED Status Indicators: Green Channel LED and Red Power LED provide clear real-time operational feedback, including self-diagnostic fault indication.
- CE Certified: Meets international safety and quality standards for peace of mind.
Key Specifications
| Model | 120B |
| Brand | LUCKING DOOR |
| Working Power Supply | AC 220V / AC 110V / DC 24V |
| Power Consumption | 4.5VA |
| Output | Relay 240V / 5A |
| Reaction Time | 10ms |
| Sensitivity | 4 adjustable levels |
| Frequency Range | 20 kHz – 170 kHz |
| Loop Inductance | 50μH – 1000μH (ideal: 100μH – 300μH) |
| Max Coil Size | 8m × 1m |
| Loop Connection Wiring | Max 20 meters, twisted ≥20 times/meter |
| Operating Temperature | -20°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | <90% (non-condensing) |
| Housing Size | 78 × 40 × 108 mm (L × W × H) |
| Certification | CE |
| Country of Origin | Mainland China |
How It Works
This inductive loop detector works by sensing changes in electromagnetic inductance caused by metallic vehicles passing over or stopping on an embedded loop coil cut into the road surface. When a vehicle is detected, the relay output triggers connected equipment — such as a barrier gate, traffic signal, or automated parking system — enabling seamless, hands-free access control.
During initial tuning, both the green Channel LED and red Power LED illuminate for approximately 2 seconds. Afterward, the green LED activates each time a vehicle is detected. A flashing Channel LED indicates a loop fault, and the unit features self-healing fault recovery for continuous operation.
Installation Tips
- Install the detector in a weatherproof location as close to the loop as possible.
- Keep the unit away from heat sources and maintain at least 10mm clearance from adjacent devices and enclosure walls.
- Use twisted-pair cable for the ground sensing lead — best results within 10 meters.
- Ensure the loop wiring is twisted at least 20 times per meter to reduce interference.
Common Applications
- Automated parking lot barrier and gate systems
- Traffic signal control and management
- Toll booth and access control entry/exit points
- Vehicle counting and monitoring systems
- Industrial facility vehicle access automation
For general guidance on traffic control systems and road safety infrastructure, refer to the Federal Highway Administration. For electrical safety standards relevant to installation, consult OSHA's Electrical Safety Guidelines.
Frequently Asked Questions
Q: What power supply options does this vehicle loop detector support?
A: This loop detector supports AC 220V, AC 110V, and DC 24V power inputs, making it compatible with a wide range of global electrical standards and parking system configurations.
Q: Can I adjust the sensitivity of the vehicle loop detector?
A: Yes. The detector features four adjustable sensitivity levels, allowing you to optimize detection performance based on your specific loop size, installation depth, and the types of vehicles being detected.
Q: How far can the loop connection wiring run from the detector?
A: The loop connection wiring can extend up to a maximum of 20 meters. It must be twisted at least 20 times per meter to minimize electromagnetic interference and maintain reliable detection performance.
Q: Is this vehicle loop detector suitable for outdoor use?
A: Yes. The detector operates reliably in temperatures from -20°C to +65°C and handles relative humidity up to 90% (non-condensing), making it well-suited for outdoor parking lots and traffic control applications when installed in a suitable weatherproof enclosure.
Q: What does the flashing Channel LED indicate?
A: A flashing green Channel LED indicates a loop fault has been detected. The unit includes a self-healing fault recovery feature, meaning it will attempt to continue operating automatically if the fault resolves itself.