• Megger

Megger® MLS635

Visible Light Source

Megger MLS635 Visible Light Source

  • 635 nm high intensity laser source
  • 9 times brighter than conventional 670 nm units
  • Visual location of faults in patch panels, trays, etc.
  • Simple identification of fiber breaks
  • Suitable for Single or Multimode fiber
  • Dry Cell or Rechargeable


  • Continuous output or 1 kHz modulated
  • Fiber Type: Single or Multimode
  • Output: Continuous or 2Hz Modulated
  • Can operate and charge
    internal batteries using
    optional charger
  • Batteries: 2 x AA Alkaline Cells (NiMh on
    NiCad can be used)
  • Battery Life: 50 hours continuous 80
    hours modulated
  • Output Power Max. 1 mW into 62.5/125 Fiber
  • Source type: Class II Laser
  • Exceptional battery life
  • Rechargeable cells charged within the instrument


The MLS635 is a hand-held, stable, visible light source that can be used to visually test optical fiber cables, splices and connectors on both multimode and single mode systems.Any sharp bends and breaks in jacketed or bare fibers, or poorly mated connectors, will cause a proportion of the guided visible light to escape making the MLS635 ideal for identifying faults in fiber optic jumper cables, distribution frames, patch panels and splice trays.It can also be used for end-to-end continuity tests, connector identification in patch panels, fiber tracing, and fibre identification during splicing operations. The MLS635 uses a high intensity 635 nm laser, which is approximately nine times brighter to the human eye than other units operating at 660 or 670 nm, providing 0.6 mW into 9/125 fiber.

IIII [+] Read More

This means that any break or other loss in a fiber optic system is much easier to see, even through jacketed Kevlar cables.Battery status warning indicates low battery condition. An optical charger is available when using rechargeable batteries.

  • Literature
  • Specifications
pdf icon Description
++ MLS635 Specification sheet
Source Type: Class II Laser
Wavelength: 635nm typical
Wavelength Accuracy: +/- 30 nm
Output Level: Max. 1 mW into 62.5/125 Fiber
Fiber Type: Single or Multimode
Continuous or 1 kHz
2 AA Alkaline Cells (NiMh on
NiCad can be used)
Battery Consumption:
50 hours continuous 80
hours modulated
Optical Connector:
Laser Class 2
Case Dimensions:
160 mm x 83 mm x 30 mm
Instrument Weight:
Operational Temp.:
-15ºC to +50ºC (5ºF to 122ºF)
Operational Humidity:
95% at 40ºC (104ºF)
Storage Temperature:
-20ºC to 70ºC (-4ºF to 158ºF)