665 Series is a “Tough LED Indicator” designed for External Harsh Environmental Applications

Marl’s 665 Series LED Panel Indicator

The 665 Series is a “Tough LED Indicator” designed for

External Harsh Environmental Applications

download (6) 665


  • Ø8.5mm mounting
  • PTFE Panel Seal
  • Range of LED Colors
  • Hard Black anodized aluminium housing
  • Wide Viewing Angle
  • Diffused Lens
  • Internal potting for high vibration applications
  • Voltage: 2-3.4Vdc  20mA
  • Flying Lead Terminations
  • Sealed to IP68 (10psi)
  • Harsh Environment Design
  • Outstanding reliability
  • Vandal resistant


Marl has designed its toughest LED panel lamp yet with the introduction of a hard anodized indicator, sealed to IP68 for tough, wet and dirty environments including marine and industrial applications. The 8.5mm mounting indicator works at pressures up to 10psi and is well protected against corrosive fluids such as sea water as well as against shock and vibration.


The Marl 665 series features “Hard Black Anodized” aluminium housing, domed shatterproof polycarbonate color diffused lens assembly, IP68 sealed enclosure as well as a PTFE “Top Hat” design panel seal to ensure the correct mounting to panel. The indicator features a unique hexagonal bezel to aid mounting and a range of high intensity sunlight readable LEDs is offered in red, yellow, green, blue or cool white.


Internal circuitry is designed to operate at 2.1/3.4Vdc – 20mA. Terminations are achieved by 150mm of color coded flying leads in accordance with Def Stan 61/12 part 18 chemical and flame retardant.


Key features include the aluminium housing, which is hard anodized in accordance with Def Stan 03-26 (50 microns), the self-lubricating PTFE seal ensuring indicator centralization, panel seal to IP68 and the internal potting medium which is cured under vacuum to ensure no air voids are present within the indicator assembly.


Mean Time Between Failure (MTBF) for this family is quoted at over 85,000 hours. The indicator comes complete with full mounting hardware.

Applications include:

  • Marine Salt Water, works up to 20 Feet under water
  • Ship Deck Control Panels
  • Oil / Gas Rig Control Panels
  • External Military Equipment
  • Lightweight Portable Equipment
  • External Industrial Control Panels
  • Harsh Environmental Applications

For more information please contact us at sales@medlandandassociates.com or feel free to call us at 408-686-0460


Posted in Uncategorized