The Wide Voltage Loop Detector is engineered to deliver unmatched versatility and reliability in vehicle detection across diverse environments. Designed to operate seamlessly with both 12-24V DC and 100-240V AC power inputs, this detector eliminates the need for additional voltage converters, making it ideal for global deployments in parking systems, toll booths, and industrial facilities. Its compact, DIN-rail mountable design (dimensions: 75mm x 40mm x 110mm) ensures easy integration into tight spaces, while CE/FCC certifications guarantee compliance with international electromagnetic and safety standards. The detector features 16-level sensitivity adjustment (0-F), allowing precise calibration for motorcycles, EVs, trucks, and AGVs within a broad 15–2000μH inductance range. Advanced LED diagnostics provide real-time fault alerts for coil shorts, open circuits, and power anomalies, reducing troubleshooting time by up to 60%. Built to withstand harsh conditions, it operates flawlessly in temperatures from -40°C to +70°C and boasts an IP67-rated enclosure for dust and water resistance.
From urban smart cities to remote industrial sites, this loop detector excels in critical applications. In parking management systems, its wide voltage compatibility supports both solar-powered lots and grid-connected facilities, while the compact design simplifies retrofitting into existing infrastructure. For industrial door control, the LED diagnostics enable proactive maintenance, minimizing downtime in high-traffic warehouses. The CE/FCC certifications ensure seamless integration with IoT-enabled traffic management platforms, making it a future-proof choice for smart highway tolling and AGV navigation systems. With auto-frequency tuning (20–80KHz), it eliminates cross-talk in multi-detector setups, ensuring accuracy even in dense installations. Backed by a 5-year warranty and 24/7 technical support, this detector combines rugged durability with cutting-edge innovation, empowering users to achieve precise, low-maintenance vehicle detection worldwide.
Features
- 1. 15-2000 μh detection Range
- The loop detector supports a wide detection range from 15 µH to 2000 µH, accommodating various loop sizes and configurations for versatile application in different traffic detection scenarios. The wide detection range enables our loop detector to detect all kinds of vehicles, motorcycles, cars, Ultra long truck, buses and so on.
- 2. Compact Side
- The compact and well-engineered housing combines all industry requirements for features and functionality, allowing this detector to be incorporated into any existing traffic detection system.
- 3. LED Diagnostic Capabilities
- Comprehensive diagnostics capabilities enable accurate diagnosis of loop and installation problems and shows through LED, ensuring optimal performance and reducing downtime.
- 4. Selectable Presence Time
- The output of the presence relay can be selected to limit a detect output to a fixed time (greater than 30 minutes) while a vehicle remains on the loop, providing flexibility in traffic management.
- 5. Loop Presence Time
- Interference between adjacent loop detectors can be identified through integral indication and eliminated by adjusting the frequency setting, ensuring reliable operation.
- 6. Two Separate Output Relays
- Presence Relay A: Provides presence output and can be extended for 0, 2, 5, 8, 10, 15, 20, or 30 seconds, programmable with external 10-way DIP switches.
- Pulse Relay B: Programmable with external 10-way DIP switches, it offers presence, pulse on entry, pulse on exit, or failed output, enhancing detection flexibility.
- 7. Automatic Sensitivity Boost (ASB)
- This feature reliably detects large truck-trailer combinations and high-bed vehicles by automatically boosting the sensitivity to maximum upon vehicle detection, ensuring accurate identification.
- 8. Automatic Environment Drifting Compensation
- Loop detectors (or other sensors) automatically adjust and calibrate themselves to changes in environmental conditions, maintaining detection accuracy and stability despite varying weather and environmental factors.
- 9. 10 Dip Switch
- The dip swich design on the shell makes the setting of loop detector easier and clearer, which is very user-friendly for users. Users can set all the functions first and then install the loop detector.
- 10. Anti-crosstalk interference.
- Through the dip Switch, the frequency of the loop detector can be adjusted to prevent crosstalk interference caused by the installation of two loop coils too close.
Connection
(1)Power Led: RED Power LED Indicates “Power ON” - Detecting Led: Continuously On: Indicates vehicle detection.
- Blinking slowly: Indicates loop is short circuit or the number of twists after the loop is not enough.
- Blinking fast: Indicates loop is open circuit or too many twists after the loop.
(2)Switch 1 (Trimpot), Sensitivity Selection -
Sensitivity of the loop can be adjusted by the trimpot labeled “Sensitivity”. User can select 16 different setting by turning the trimpot with 0 being the least sensitive and “F” being the most sensitive.
(3)Switch 2 (Dipswitch Settings)
1.DIP 1 & DIP 2 Setting Special Functions
2. DIP 3 & DIP 4 Setting Relay B Output
3. DIP 5 Setting Automatic Reset
4. DIP 6 & DIP 7 & DIP 8 Setting Relay A Delay
5. DIP 9 & DIP 10 Setting Frequency (40 K to 100 KHz). Used to avoid the interference
- In the application, where two or more loop detectors and sensing loops have been installed, set one detector to high frequency and the other set to low frequency to minimize the effects of cross-talk between the two systems(The sensing loops and detectors should be positioned at least 2m apart).
- Reset Button:Please note: The LD-100 must be reset every time a setting change is made to the Dip switches.
Detector Position And Installation: - Install the detector in a weatherproof housing.
- The detector should be as close to the sensing loop as possible.
- The detector should always be installed away from strong magnetic fields.
- Avoid running high voltage wires near the loop detectors.
- Do not install the detector on vibrating objects.
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When the control box is installed within 10 metres of the loop, normal wires can be used to connect the control box to the loop. More than 10 metres requires the use of a 2 core shielded cable. Do not exceed 30 metres distance between control box and loop.
Loop Installation:
The loops are sealed using a “quick-set” black epoxy compound or hot bitumen mastic to blend with the roadway surface.
Trouble Shooting:
Certification
Product Series
| LD-100 | LD-102 | LD-200 | LD-202 | JTHT-11 |
| 
Single Channel 100-240 V AC | 
Single Channel 12-24 V AC/DC | 
Dual Channel 100-240 V AC | 
Dual Channel 12-24 V AV/DC | 
Loop cable 305 m Teflon coil |
| LCR-MT | | | | |
| 
Multimeter | | | | |
