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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: BOB
  • Model Number: BOB-VFL650-1S
  • Visual Fault Locator: Customized
  • Materia: High-end imports of aluminum
  • Applications: Maintenance in telecom, CATV
  • Operating model: Both CW and Pulse available
  • Pulse frequency: 2Hz to 3Hz / 9Hz
  • Operating temperature: -20°C to 60°C
  • Certification: CE RoHS FCC
  • Distance: 5km / 20km / 30km / 50km
  • Wavelength: 650±10nm
  • Output Power: 5mw,10mw,20mw,30mw,40mw,50mw

Packaging & Delivery

Packaging Details Black leather sheath and white box.
Delivery Time 3-4 working days after received your payment

Product Description

BOB-VFL650-1S exfo otdr red laser Light Source cable new USB Charging fiber optic Test Pen visual fault locator 10mw


The pen- type visual fault locator is specially designed for field personnel who need an efficient and economical tool for fiber tracing, fiber routing and continuity checking in optical networks. And it is the essential test tool for the FTTH project. This visual fault locator is with so many advantages, such as long woking life, rugged, portable, beautiful appearance and so on. It is the best choice for the field personnel.


1.Drop-resistant and dust-proof design of laser head

2.5mm universal connector,for 1.25mm connectors,FC(male)-LC(Female) adaptor also can be provided on request

3.Operates either in CW or Pulsed mode with constant output power

4.Laser case ground design prevents ESD damage

5.Low battery warning+Long battery life (up to 60 hours)

6.Drop-resistant and dust-proof design of laser head

7.Portable and rugged

8.Easy to use


1.Maintenance in telecom, CATV

2.Test Lab of optical fibers

3.Fiber routing and continuity checking in optical networks

4.Other fiber optic measurements


1.Find breakpoints, poor connections, bending or cracking in fiber optic cables

2.Find faults in an OTDR dead zone

3.Is used for end-to-end visual fiber identification.  



Brand NameColorMateriaWavelengthsOperating Model
BOBsilverHigh-end imports of aluminum650±10nmCW,Pulse
Optical Connector TypePower Supplybattery life
2.5mm,1.25mm2x"AA"Long battery life (up to 60 hours) .Low battery warning
Output Power 5mw10mw20mw 30mw50mw
Laser range(>5km)(>10km)(>20km)(>30km)(>50km)
Optical connector2.5mm universal connector,for 1.25mm connectors, FC(male)-LC(Female) adaptor also can be provided on request
Operating modeOperates either in CW or Pulsed mode with constant output power

Method of use

1. Screw the end cap from the pen, the battery will be prepared into the pen, battery cathode to the end cap, the positive on the pen body is positive;(note: please do not turn pen and pencil tail into the battery)
2. Put the pen and pencil body connection installed, open the dust cap, press the control switch one time, observe the interface has a red light, luminous tube on at the same time;(note don't eyes were light interface, so as not to damage the eye)
3. Press the control switch again, observe the light into a pulse mode, the indicator light-emitting tube and out of sync pulse light;(pulse frequency in 2-3 hz or 9 hz)
4. Press the control switch again, light source closed, no light output, at the same time indicator light pipe out;(switch mode to: continuous - pulse - closed - continuous cycle mode)
5. When detecting insert tested optical fiber optical interface, press the control switch at the same time, choose the output light work mode (continuous or pulse);
6. After use, build the dust cap, do not use for a long time, please take out the battery, in order to avoid battery rot, damage the light source.


Maintenance and matters needing attention

1. Laser and harmful, especially to pay attention to protect the eyes, when laser works, avoid to irradiate the eyes with laser directly;
2. In generally, the higher the temperature, the shorter the life of laser, when used to avoid high temperature working environment;
3. The work of laser optical fiber head should be cleaned;
4. When used, the optical interface and the interface needs to detect light and light pull plug;
5. Don't use the light source, would you please put dust cap to avoid dust fall;
6. Should remove the battery when not in using;
7. Please do not remove the end cap and any part of the dust cap, remove shall not be responsible for damage caused.

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Our Services

We specialize in this field for 20 years, with best servise and very rich experience, no matter pre-sales or after-sales, we can provide very professional help in your project. Choose us, what we can provide not only the best quality and competitive price, but also:
1, Professinal custom-made product.
1, OEM support.
2, Low MOQ Low price from a professinal factory.
3, Fast delivery, normaly we can ship it in two days.
4, Provide sample order for testing. 

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