Gate Loop Detector for Barrier & Industrial Doors: Short/Open Circuit Indicator, Reliable Performance

Core Features of Gate Loop Detector for Barrier & Industrial Doors

• Short/Open Circuit Indication: Dedicated LED indicators for loop short circuits and open circuits, enabling quick fault identification and reduced maintenance time.
• Reliable Vehicle Detection: Optimized sensing algorithm detects cars, trucks, forklifts, and commercial vehicles with minimal false triggers, ensuring precise barrier/door activation.
• Industrial-Grade Durability: Rugged housing resistant to dust, moisture, vibration, and extreme temperatures, tailored for industrial door and barrier gate environments.
• Dual Operational Modes: Presence Mode (for continuous vehicle monitoring to hold doors open) and Pulse Mode (for one-time trigger actions like barrier lifting), adapting to diverse access needs.
• Flexible Integration: Supports 100–240V AC (LD100) and 12–24V DC (LD102) power inputs, with dual relay outputs (SPDT) for seamless connection to gate controllers and industrial door automation systems.
• Adjustable Sensitivity & Frequency: 16-level sensitivity (0.010% to 2.56% DL/L) and 4-step selectable frequency (20–80 kHz) to avoid interference from adjacent loops or metal structures.

Technical Specifications

Key Applications

• Barrier Gate Systems: Parking lot entry/exit barriers, residential/commercial access barriers, and toll booth barrier activation.
• Industrial Door Automation: High-speed roller doors, sectional doors, and overhead doors in warehouses, factories, and logistics centers.
• Warehouse & Loading Docks: Forklift and truck detection to trigger loading dock door opening and safety interlocks.
• Commercial Access Control: Office park, mall, and stadium gate automation for vehicle entry/exit.
• Logistics & Distribution Centers: Heavy-duty vehicle detection for yard access control and internal traffic flow management.
• Residential Gated Communities: Automated gate activation with reliable vehicle sensing and fault monitoring.
• Industrial Plant Access: Restricted area access control for factory vehicles, with quick fault diagnosis via circuit indicators.

DIP Switch Configuration

DIP 1 and 2 Delay and sensitivity boost
DIP 3 and 4 Relay B output mode pulse presence test
DIP 5 Auto reset 30 min or permanent presence
DIP 6 to 8 Relay A delay 0 to 30 sec
DIP 9 and 10 Frequency selection High Low to avoid interference

Loop Installation Guide

Why Choose JUTAI Loop Detector

15 plus years of manufacturing expertise
Rigorous quality control and pre shipment testing
OEM ODM customization available
Small and bulk orders accepted
2 year warranty and reliable after sales support
Market protection for distributors

Order Now and Enhance Your Vehicle Detection System with JUTAIs Professional Loop Detector

Contact us for samples pricing and custom solutions

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

Loop Installation:


Trouble Shooting:



Compared to other brands



Mass Production:

Our production line ensures efficient mass production, rigorous quality control, and thorough pre-shipment testing to deliver Loop detector products of the utmost perfection.




LD-100 single channel, boxed, 1 type 11pin connects 100-240VAC(EU standard)
LD-102 single channel, boxed, 1 type 11pin connects 12-24VADC(EU standard)
LD-105 single channel, boxed, 2 type 11pin connects 100-240VAC(USA standard)
LD-106 single channel, boxed, 2 type 11pin connects 12-24VADC(USA standard)



Certification: