EXPRESS 3 offers continuous, real-time monitoring of any buoy lantern, promptly detecting malfunctions or off-position buoys.

Product Highlights

DAS light sensor

With the inclusion of the DAS light sensor, connected to the Lantern Interface Module, EXPRESS 3 reports live updates on the operational status of lanterns, regardless of their manufacturer or size (up to 3000 mm in diameter).

Real-time information

This system provides real-time information on lantern status, indicating whether they are in the ‘on’ or ‘off’ position, and assessing their overall health (healthy or failed). This crucial data is relayed to nearby VTS centres, enabling operators to identify issues at an early stage, minimise downtime, and elevate safety levels within maritime navigation.

A complete solution

EXPRESS 3 comes as a complete packaged solution allowing for a straightforward deployment, minimising installation costs, and reducing the new for specialist installers; it contains the following items.


Standards Compliance

AIS standard IEC 61993-2 Ed 2.0
ITU-R M.1371-5
Serial data interface standards IEC 61162-1 Ed 4.0
IEC 61162-2 Ed 1.0
IEC 61162-3 2008 Ed 1.2
Environmental Standard IEC 60945 Ed 4.0
GNSS performance standard IEC 61108-1 Ed 2.0
IEC 61108-2 Ed 1.0
Product safety IEC 60945 Ed 4.0


Data sheet Click here to download


SRT products offer unmatched capability to be customised for specific applications and markets. Additional features and functions can be specified and implement


Our OEM products are supplied fully branded as per your specific requirements. This includes the product, all manuals and packaging such that upon arrival they


This product is fully tested and certified to the relevant international standards and product specifications. As part of the OEM customisation process into you

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AIS Aids to Navigation (AtoN)

Easy and cost effective solutions for any port or waterway authority to significantly improve safety through effective and reliable monitoring of buoys, lanterns and the environment.