W3 Loop Detector
W3Ultrasonic Radar Sensorr(Parking lot sensor)
      Ultrasonic Sensor
     Indicating Led Lights
W2Microwave Sensor
Microwave SensorDoor Safety Beam Sensor
(Infrared Photoelectric)
      HW-100ABE (50M Up)
Microwave Sensor Infrared scanning vehicles separator(Optical beam sensor)
Microwave SensorDoor Switches
      Hand Sensor Switch
 Wireless Remote Control Switch
  Push Button Switches
W1 Automatic barriers
    Barrier Gate
Microwave SensorGSM Remote Door Opener
VD108B Vehicle Loop Detector(TTL=5V Output)
2、Weight: 100g
Connectors: For input voltage, power connectors, loop connectors and output, please refer the following left diagram.
When vehicle present, Pin9 output is 0V(HCMOS); When vehicle does not present, Pin9 output is +5V(HCMOS).
LED Display and Switches: Please refer the right diagram for the operation panel.
1、POWER: LED Indicator 。 When LED is in red full lit, power is supplied.
2、DETECT: When LED is in red flash(2.5Hz), a vehicle is detected. When LED changes back to full lit, the vehicle left the loop.
3、SW (DIP SWITCH) : Used to select the sensitivity. , 0 means the lowest sensitivity, 3 means the highest sensitivity 。
Sensitivity(-ΔL/L)      Unit : %
LevelDIP1 DIP2TriggerRelease
3On On0.0160.004
3On Off0.0640.016
1Off On0.2560.064
0Off Off1.0240.256
4、SW (DIP SWITCH) : When DIP 3 is On, Pin9 detected signal has 2 seconds delay.
5、When DIP3 is On, the vehicle will cause no output on detector if the speed of vehicle is over 8km/h.
6、RESET : Press the RESET button, the detector will be reset. It must be used after plugging in the detector.
Installation and Diagnoses:
1、Please refer the bottom diagrams for loop size and installation.
2、We recommend to use 0.75mm2 multi-core copper wire. The total wire length include feeder can be up to 500m.
3、The loop should be rectangular and avoid any right angle. The recommended length is from 1.0m-2.0m , the recommended width is from 0.8m-1.2m.
4、The perimeter and turns:
Loop Perimeter Turns
3 -4 m 6
4 - 6 m5
6 - 10 m4
10 - 20 m3
20 m-up2
5、The feeder must be twisted per 15mm.
6、More turns, lower frequency. Less turns, higher frequency.
7、Place the loop away from the moving metal.
8、Any vehicle can be detected, when the speed is less than 160km/h
9、Press Reset button will reset the detector.
10、If the LED is not in full lit, please check the power supplier.
11、If the LED is in 0.25Hz blink(about 2 seconds ON and 2 seconds, the fault will be loop is in short cut(turns is not enough) or loop is in open(turns is too much).
12、If turns is not enough, please add more turns(frequency is too high).
13、If turns is not enough, please leave more turns(frequency is too low).
Tel:+86-21-66146557/60512057   Fax:+86-21-65917887
Address: Rm301, NO158,Guoding Rd,Shanghai , China
E-Mail: carsonlung@hotmail.com