Vehicle Digital Loop Detector

US $30

Min. Order:1 pc
Keywords:digital loop detect , motion detection , proximity sensor
Origin:Made In China

Inquire Now

Member Information

Company NameShenZhen Tenet Technology CO.,LTD.
Country/Region:Guang Dong - China
Business Nature:Manufacturer
Contact:MandyForeign Trade Clerk
Last Online:01 Jun, 2017
+ View all products.

Product Description


Vehicle Digital Loop Detector TLD-500 With 2 Relays in Parking Management System



TLD-500 is used for wherever vehicles have to be detected, for example for monitoring 

and safe-guarding access ways or for counting vehicles. The output signal can be used 

for controlling door drive mechanisms, operating barriers, activating card dispensers etc


A.Application Scope :


A1)Parking lot entrances vehicle detection ;

A2)Parking lot space information acquisition system ;

A3)Electronic police traffic lights snap shot system ;

A4)Traffic monitoring system .


B.Main Characteristics:

B1) Supply voltage AC: 220V, 110V, 24V, 12V
B2) Supply voltage DC: 24V, 12V
B3) Sensitivity: adjustable in 3 increments (high .medium. low)
B4) Storage temperature: -40°C to +85°C
B5) Reaction time: 100ms
B6) Loop connection wiring: Maximum length 200 meters,
B7) Twisted at least 20 times per meter
B8) Net Weight: 300g


Single loop detector TLD-500 panel

a. Tune

The tuning range is from 50µH to 1000µH, and such wide tuning range ensures low requirements for the loop and wiring. Any inductance changes will feedback to the compensation circuit in detector to ensure normal work.

b. Adjustable sensitivity

When in low sensitivity, the detector will detect vehicles with high chassis or trailers correctly except cars, bicycles and other small metals. The sensitivity adjust button is the rotary encoder switch on the panel, “0” with low sensitivity and “9” with high sensitivity. The A switch on left is corresponding to loop A, while B on right is corresponding to loop B. 

c. Reaction time

Its definition is the time starting from the metal enters into the loop and ending when the detector gives indication signals.

d. Frequency adjustment

When power on, the detector can calibrate itself automatically and the two red lights are on which will continue for 2s. 

e. Output mode of relay

Every channel has two relay outputs in our detectors. There are two relays A1 and A2 with channel A. And there are two relays B1 and B2 with channel B. Relay A1 and B1 are existing output (on when metals on the loop and off when metals leaving). Relay A2 and B2 are multifunctional output set by the three bit code switch on the left of the panel. Operate as follows:

For A2 relay output of TLD-500 Series to provide output delay and delay functions, 

an extension of time from 0-4.5s,  0.5s for the gradient by continuous adjustment 



About Us :

Shenzhen Tenet Technology CO.,LTD.

Established in 2001, is a large-scale high-tech private
enterprise integrating research & development, production,sale,with over 15 years experience .
We supply a complete set of solutions , for example,
1.PMS (Parking Management System)
2.PGS (Parking Guidance System)
3.Barrier Gate,Ticket Machine
4.Other Security Equipments :Parking card dispenser machine, Vehicle loop sensor, RFID reader, 
Parking access controller, Barrier gate, Ticket machine, Parking LED display and so on .


A letter to customers 

Dear friend,

Welcome to visit here .

This is Mandy from China Tenet .

Tenet  is professional in Parking System & Equipment ,with more than 15 years experience.

Any questions , feel free to contact me .

It’s my great honor if we can set up good relationship.

Thanks and best regards


Skype: tenet_mandy


Tel.: +86 15889635036



Payment Terms:TT/WU

Product Image

Sponsored Products