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British-made sealed LED panel indicators from MARL International are ideal for harsh environments, samples available from Anglia

Date Published : 11/05/2023 Share with:

MARL, based in Ulverston in Cumbria, UK, designs and manufactures long-lasting, robust products which have proved their worth over more than four decades. They are recognised internationally as a pioneering technology business known for its opto electronic expertise and for developing high quality, innovative products for a range of industries.

One of their British-made innovations, the 677 Series, boasts more than 25 years as an industry standard LED panel indicator lamp known for being a robust, resilient, high-performance product used in some of the most challenging conditions on land, sea, and in the air. Thousands of the 677 Series indicators are now sold every month all over the world - including Asia, Australasia, North and South America and all across Europe.

The 677 Series lamp housing is manufactured from precision turned high grade aluminium with an anodised finish designed to have a high level of aesthetic appearance and robustness. The Indicators feature a smoked lens, wide viewing angle, strong on/off contrast ratio along with its high intensity LED colours in red, yellow, green, white and blue make it visible in any conditions, with bi-colour and tri-colour LEDs also available. Internal circuitry is designed for operation at a range of voltage options and includes a reverse protection diode, as standard, the indicators are also internally potted to ensure robustness.

Measuring just Ø8.1mm mounting, the indicators are sealed in excess of the IP67 specification and are weatherproof, vandal-proof, and durable to shock and vibration. The 677 Series LED panel indicators provide a reliable status indication solution for all types of applications. Termination is via solder/crimp tabs, customisations such as adding flying leads can also be accommodated, contact Anglia with your requirement.


The 677 Series has proven itself as the panel indicator of choice because of the weatherproof lamp’s ability to withstand high vibrations and its ease of visibility in all conditions. The LEDs perform really well in high vibration applications and are easy to see from distance even in bright sunlight conditions, they can endure rain, sun, grease and impacts, and keep on working.

The 677 Series is suitable for a wide range of applications, from control systems and signalling it has proved invaluable across a range of market sectors such as defence (air, land and sea), aerospace, shipping, rail, industry, power stations, telecommunications, and the automotive industry including Grand Prix engineering in cars and support systems. The 677 Series is also widely used in professional electronic and architectural applications for construction projects, hotel and leisure schemes, and for prestigious home and landscaping projects. They can be used for both indication and accent lighting with white versions able to provide sufficient light for low level task illumination and perimeter lighting.

Key Features

  • Ø8.1mm (0.318") mounting
  • Black anodised aluminium housing
  • Sealed to IP67 - weatherproof
  • Wide viewing angle - smoked lens
  • Internal potting
  • Internal reverse protection diode fitted as standard
  • Range of LED colour options: Red, Yellow, Green, Blue and White
  • Range of voltage options
  • Flying lead terminations available 
  • Operating temperature: -40°C to +75°C


Click here for more information or to buy from Anglia Live.

Click here to download the 677 Series datasheet

Anglia are offering customers FREE samples of the 677 Series sealed LED panel indicators from MARL International, please fill in the form below to register for samples now.




To register for FREE samples of the 677 Series sealed LED panel indicators from MARL International, please fill in the form below.

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FREE samples for UK and Ireland customers only, subject to availability.

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