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JUTAI Dual Channel Loop Detector LD-200 LD-202

JUTAI Dual Channel Loop Detector LD-200 LD-202

JUTAI Dual Channel Loop Detector LD-200 LD-202
JUTAI Dual Channel Loop Detector LD-200 LD-202
Categories Vehicle Loop Detector
Output Interface: 2 relays
Sensitivity: 16 way selectable/Highest 0.01% DL/L / Lowest 2.56% DL/L
Supply Ability: 5000 Pcs per Month
Temperature Range: -40 to +70 ℃ (-111°F to +158°F)
Gross Weight: 300 g
Model Number: LD-202 LD-200
Product Size: 76*42*91.5 mm
Loop Connection: Twisted pair cable
Warranty: 2 Year
Net Weight: 195 g
MOQ: Support 1-10 Pcs for Sample
Delivery Time: 5-8 working day
Self-turning range: 15-2000 uh
Package: Carton
Package Size: 136*86*52 mm
Payment Terms: L/C,D/A,D/P,T/T,Western Union,Paypal,Alipay
Channel: Dual Channel
HS Code: 9033000090
Price: Negotiation
Name: Vehicle Loop Detector
Reaction Times: 10-90 MS
Color: White
Brand Name: JUTAI
Power Supply: 12-24 V / 100-240 V
Certification: CE FCC
Humidity: 95% non-condensing
Place of Origin: Shenzhen China
Relay Output: Presence Relay / Fault Relay
Packaging Details: 50 Pcs 1 Carton
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Company Info.
Shenzhen Jutai Comm Co., Ltd.
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JUTAI Dual Channel Loop Detector LD-200 LD-202

JUTAI Dual Channel Loop Detector LD-200 LD-202


As intelligent parking, unattended access control, and modern traffic management systems continue to develop, vehicle detection equipment is required not only to accurately detect vehicle presence, but also to identify vehicle movement sequences and travel directions. By operating with two induction loops, a dual-channel loop detector provides more reliable vehicle detection for barrier gate control, entry and exit counting, parking fee systems, industrial park access points, toll stations, and traffic signal control. Compared with single-zone detection, dual-loop detection helps reduce direction misjudgment and repeated triggering, improving traffic efficiency and overall system automation. It has become an important vehicle detection component in modern parking management and intelligent transportation systems.


The dual-channel vehicle loop detector features two independent detection channels, CH1 and CH2, allowing two induction loops to be connected simultaneously. By analyzing the sequence in which a vehicle passes over the two loops, the detector can identify the vehicle’s travel direction. It supports independent presence output for both channels, vehicle entry or exit pulse output, and independent sensitivity and operating frequency adjustment for each channel. Trailer sensitivity enhancement and permanent vehicle presence detection are also supported, making it suitable for parking and traffic manageme


dual channel loop detectoe

dual channel loop detector



Feature

1.Wide Loop Inductance Range


Supports a wide loop inductance range of 20–2000 μH, providing strong compatibility with different loop sizes, cable lengths, and installation conditions. This allows flexible adaptation to various parking, barrier gate, and traffic detection applications.

2. Dual-Channel Vehicle Detection

Equipped with two independent detection channels, CH1 and CH2, the detector can connect to two induction loops simultaneously. The two channels can operate as independent detection zones or work together to perform more advanced vehicle detection logic.

3. Vehicle Direction Recognition

The detector identifies vehicle travel direction based on the sequence in which the vehicle passes over CH1 and CH2. Different relay outputs can be activated according to the detected direction, making it suitable for entrances, exits, and bidirectional lanes.

4. Six Selectable Operating Modes

Supports multiple operating modes, including direction recognition, independent vehicle presence output for both channels, vehicle entry pulse output, and vehicle exit pulse output, providing flexible configuration for different parking and traffic control systems.

5. Independent Relay Output for Each Channel

CH1 and CH2 each provide independent COM and NO relay outputs, allowing connection to barrier gates, access controllers, vehicle counters, parking payment systems, and traffic control equipment.

6. Independent Sensitivity Adjustment for Both Channels

Each channel supports 8 sensitivity levels, adjustable from 0.015% to 0.8%. The sensitivity can be configured separately according to loop size, installation conditions, and different vehicle types such as passenger cars, trucks, and trailers.

7. Trailer Sensitivity Enhancement

The sensitivity of both channels can be enhanced to help prevent unintended relay dropouts when trailers, articulated vehicles, or long vehicles pass over the loops due to gaps or discontinuities in their metal structure.

8. Permanent Presence and Automatic Reset Modes

Supports permanent vehicle presence detection, allowing the output to remain active while a vehicle stays over the loop for an extended period. An automatic reset mode is also available to help recover from abnormal detection conditions.

9. Four Selectable Operating Frequencies

CH1 and CH2 can be configured with High, Medium-High, Medium-Low, or Low operating frequencies within approximately 20–100 kHz, helping reduce interference between adjacent induction loops.

10. Comprehensive Status and Fault Indication

Equipped with a power indicator and independent CH1 and CH2 detection indicators. The LEDs display vehicle presence status and use different flashing patterns to indicate loop short circuits, open circuits, or incorrect loop winding conditions.

11. Quick DIP Switch Configuration

Operating mode, sensitivity, frequency, permanent presence, and trailer sensitivity enhancement can all be configured through DIP switches, making on-site installation, commissioning, and parameter adjustment simple and efficient.

12. Multiple Power Supply Versions

The LD-200 supports a wide 100–240 VAC power input, while the LD-202 supports 12–24 V low-voltage power, allowing compatibility with different parking systems, control cabinets, and project power environments.

13. Easy Installation and Maintenance

The detector features a plug-in terminal structure, a dedicated grounding terminal, and a reset button. LED indicators, frequency adjustment, and loop parameter settings help simplify commissioning, troubleshooting, and maintenance.

14. Wide Range of Vehicle Management Applications

Suitable for parking entrances and exits, barrier gate systems, vehicle entry/exit counting, toll stations, industrial parks, logistics centers, weighing systems, traffic signal control, and other applications requiring dual-loop detection and vehicle direction recognition.




vehicle loop detectorvehicle loop detector
loop detectorvehicle loop detector





loop detector

LED Status & Fault Indication

The detector features clear LED indicators for quick status monitoring and loop fault diagnosis:

  • POWER LED: Red LED stays ON when the detector is powered normally.
  • CH1 / CH2 LED – Steady ON: Vehicle detected on the corresponding loop.
  • CH1 / CH2 LED – Slow Flashing: Indicates a loop short circuit or insufficient loop turns. Try selecting a lower operating frequency; if necessary, add more loop turns.
  • CH1 / CH2 LED – Fast Flashing: Indicates a loop open circuit or excessive loop turns. Try selecting a higher operating frequency; if necessary, reduce the number of loop turns.

This visual diagnostic system helps installers quickly identify loop conditions and simplifies on-site commissioning and troubleshooting.

dual channel loop detector

DIP 1 & DIP 2 Function Settings

DIP 1 – Trailer Sensitivity Boost
Set DIP 1 to ON to increase the detection sensitivity of both CH1 and CH2. This helps maintain stable vehicle detection and prevents relay dropouts when detecting trailers, long vehicles, or vehicles with discontinuous metal structures.

DIP 2 – Presence / Auto-Reset Mode

  • ON – Permanent Presence: The detector continuously maintains the vehicle presence signal until the vehicle leaves the loop or the detector is manually reset.
  • OFF – Automatic Reset: If a vehicle remains continuously on the loop for approximately 10 minutes, the detector automatically resets to help prevent abnormal or false operation.

These two settings apply to both detection channels (CH1 and CH2).

dual channel loop detector

6 Selectable Operating Modes

Use S1 DIP 3–5 together with S2 DIP 1–2 to select the required operating mode.

Mode 1 – Direction Detection + Pulse Output
Set S1-D3 ON, S1-D4 OFF, S2-D1 OFF. S1-D5 and S2-D2 can be either ON or OFF. The detector identifies whether the vehicle travels from CH1 to CH2 or from CH2 to CH1 and provides the corresponding relay pulse output.

Mode 2 – Direction Detection + Presence Output
Set S1-D3 ON, S1-D4 ON, S1-D5 OFF, S2-D1 ON, S2-D2 OFF. The detector identifies the vehicle travel direction and activates the corresponding presence relay according to the vehicle movement through the two loops.

Mode 3 – Direction Detection + Presence Output
Set S1-D3 ON, S1-D4 ON, S1-D5 ON, S2-D1 ON, S2-D2 ON. This mode also provides directional presence detection, using a different dual-loop output logic.

Mode 4 – Independent Presence Output
Set S1-D3 OFF, S1-D4 OFF, S2-D1 OFF. S1-D5 and S2-D2 can be either ON or OFF. CH1 and CH2 operate independently, and each relay remains active while a vehicle is present on the corresponding loop.

Mode 5 – Entry Pulse Output
Set S1-D3 OFF, S1-D4 ON, S1-D5 OFF, S2-D1 ON, S2-D2 OFF. CH1 and CH2 operate independently and generate a pulse when a vehicle enters the corresponding loop.

Mode 6 – Exit Pulse Output
Set S1-D3 OFF, S1-D4 ON, S1-D5 ON, S2-D1 ON, S2-D2 ON. CH1 and CH2 operate independently and generate a pulse when a vehicle leaves the corresponding loop.

Modes 1–3 are used for vehicle direction detection, while Modes 4–6 are used for independent dual-channel vehicle detection.


dual channel loop detector

8-Level Sensitivity Setting

The sensitivity of CH1 and CH2 can be adjusted independently to suit different vehicle types, loop sizes, and installation conditions.

  • CH1: Set by S1 DIP 6, 7 & 8
  • CH2: Set by S2 DIP 3, 4 & 5

The detector provides 8 sensitivity levels:

0.015% – Highest Sensitivity
CH1: D6 ON, D7 ON, D8 ON
CH2: D3 ON, D4 ON, D5 ON

0.02%
CH1: D6 ON, D7 ON, D8 OFF
CH2: D3 ON, D4 ON, D5 OFF

0.04%
CH1: D6 ON, D7 OFF, D8 ON
CH2: D3 ON, D4 OFF, D5 ON

0.08%
CH1: D6 ON, D7 OFF, D8 OFF
CH2: D3 ON, D4 OFF, D5 OFF

0.12%
CH1: D6 OFF, D7 ON, D8 ON
CH2: D3 OFF, D4 ON, D5 ON

0.2%
CH1: D6 OFF, D7 ON, D8 OFF
CH2: D3 OFF, D4 ON, D5 OFF

0.5%
CH1: D6 OFF, D7 OFF, D8 ON
CH2: D3 OFF, D4 OFF, D5 ON

0.8% – Lowest Sensitivity
CH1: D6 OFF, D7 OFF, D8 OFF
CH2: D3 OFF, D4 OFF, D5 OFF

Note: A lower percentage value means higher detection sensitivity. Higher sensitivity is suitable for vehicles that produce a weaker inductive signal, while lower sensitivity can help reduce unwanted triggering in environments with stronger interference.

dual channel loop detector

Frequency Setting

The detector allows the operating frequency of CH1 and CH2 to be adjusted independently to help reduce interference between adjacent loops and improve system stability.

  • CH1 Frequency: Set by S1 DIP 9 and DIP 10
  • CH2 Frequency: Set by S2 DIP 6 and DIP 7

There are 4 selectable frequency levels:

High Frequency
CH1: D9 OFF, D10 OFF
CH2: D6 OFF, D7 OFF

Medium-High Frequency
CH1: D9 ON, D10 OFF
CH2: D6 ON, D7 OFF

Medium-Low Frequency
CH1: D9 OFF, D10 ON
CH2: D6 OFF, D7 ON

Low Frequency
CH1: D9 ON, D10 ON
CH2: D6 ON, D7 ON

Note: Frequency adjustment is mainly used to minimize crosstalk and interference between nearby loop detectors. When two loops are installed close to each other, it is recommended to set them to different frequency levels for more reliable operation.

dual channel loopc detector

Reset Button
Press the RESET button after changing any DIP switch settings to apply the new configuration. It can also be used to manually reset the detector and restore normal operation when necessary.



Application

Parking Entrance and Exit Management
Uses two induction loops to determine whether a vehicle is entering or leaving, providing vehicle passage signals to parking payment systems, license plate recognition systems, and parking management platforms.		dual channel
Automatic Door and Industrial Door Control
Can be installed before and after industrial doors, high-speed doors, or factory gates for vehicle-triggered opening, passage confirmation, and automatic closing control.		loop detector
Sliding Gate Application
Can be used with automatic sliding gate systems for vehicle detection, gate opening trigger, vehicle presence monitoring, and passage confirmation. Dual-loop detection can also identify vehicle travel direction and provide reliable signals for safe and efficient gate opening and closing control.		dual channel loop detector
Automatic Barrier Gate Control
Used for vehicle-triggered gate opening, vehicle presence holding, and exit confirmation, allowing the barrier gate to operate according to the vehicle’s actual position.		dual channel vehicle loop detector
Vehicle Direction Detection
Determines vehicle travel direction based on whether CH1 or CH2 is triggered first, making it suitable for bidirectional lanes, single-lane entrances/exits, and internal traffic management.		dual channel loop detector
Vehicle Flow Counting
Distinguishes incoming and outgoing vehicles through the triggering sequence of two loops, supporting parking space calculation, vehicle counting, and traffic flow analysis.		loop detector
Wrong-Way Vehicle Prevention
When a vehicle approaches from an unauthorized direction, the system can prevent gate opening or activate alarms, warning lights, or other devices based on the detected direction.		dual channel loop detector application
Anti-Tailgating Control
Dual loops provide sequential vehicle detection across two zones, helping the control system determine whether vehicles are following too closely or whether one complete vehicle passage has been completed.		dual channel loop detector
Unattended Parking Systems
Can work with license plate recognition, automatic payment systems, ticket/card devices, and parking controllers to achieve automatic vehicle detection, direction recognition, and entry/exit recording.		dual channel loop detector
Toll Stations and Checkpoints
Used to confirm vehicle arrival, entry into the detection zone, and complete departure, while providing trigger signals to toll equipment, barrier gates, or inspection systems.		dual channel loop detector
Industrial Parks and Logistics Center Entrances
Suitable for presence detection, direction recognition, and gate control of trucks, trailers, forklifts, and other vehicles. Trailer sensitivity enhancement helps maintain stable detection for long vehicles.		dual channel loop detector application
Weighbridge and Vehicle Weighing Systems
Two loops installed before and after the weighing area can detect vehicle entry and exit, providing signals for weighing activation, data recording, and traffic light control.		dual channel loop detector
Traffic Signal Control
Detects vehicle arrival and travel direction to control traffic lights, lane indicators, or other traffic management devices, improving traffic efficiency at intersections and internal roads.		dual channel loop detector




Size and Package Size

dual channel loop detector sizapackage size



Production


loop detector production

loop detector production

loop detector production

loop detector production

loop detector production

loop detector production

loop detector production

loop detector production

production

production


Certification

vehicle loop detector


Product Series

LD-100LD-102LD-200LD-202JTHT-11

high sensitive loop detector

Single Channel

100-240 V AC

loop detector

Single Channel

12-24 V AC/DC

loop detector

Dual Channel

100-240 V AC

loop detector

Dual Channel

12-24 V AV/DC

loop cable

Loop cable

305 m Teflon coil

LCR-MT



multimeter


Multimeter








Product Tags:

JUTAI dual channel loop detector

  

vehicle loop detector with warranty

  

LD-200 LD-202 loop detector

  
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JUTAI Dual Channel Loop Detector LD-200 LD-202

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