The DX903S is a compact, solar-integrated AIS AtoN system for navigation buoys, fixed beacons and other remote marine marks.

Its AIS transponder, solar panels, LiFePO₄ battery, antenna and positioning functions are integrated into one IP68 unit. This simplifies installation where an external power system is unavailable and helps reduce the number of separate components required at the site.

New buoy and field projects often need AIS communication but do not have an existing battery, solar array or power-management system.

The DX903S brings the main AIS and power components together in one compact unit. It can be mounted as a complete communication system rather than requiring the customer to source and connect several separate devices.

This makes it particularly suitable for new installations, temporary projects and remote marks where installation space and maintenance access are limited.

DX903S Components and Dimensions

Four vertical solar panels collect energy from different directions and charge the internal LiFePO₄ battery.

The system supports ≥30 days of operation in overcast or rainy conditions, helping maintain AIS communication during periods of reduced solar charging. The sealed IP68 construction is designed for long-term exposure on buoys and fixed marine structures.

The DX903S supports Type 1 and Type 3 AIS AtoN operation with:

• FATDMA: pre-assigned AIS transmission slots
• RATDMA: selection of available transmission slots
• SOTDMA: self-organised transmission scheduling

The typical AIS communication range is 15–20 NM, depending on antenna height, installation conditions, surrounding obstructions and system configuration.

BeiDou and GPS dual-mode positioning support accurate AtoN position information for buoy and fixed-mark applications.

Our solar-integrated AIS AtoN system can connect with the Satvora 360 platform as part of a configured AIS monitoring system.

PC and mobile access can support:

• Asset status monitoring
• Position information
• Alarm records
• Remote configuration
• Maintenance management

A dedicated data port supports data connection, external charging and firmware upgrades without requiring complete disassembly of the unit.

This gives technicians a more practical way to complete commissioning, software updates and field maintenance while reducing unnecessary access to internal components.

This Independent AIS AtoN is suitable for:

• Navigation buoys
• Channel and fairway marks
• Fixed beacons
• Harbour and port approaches
• Coastal waterways
• Offshore navigation marks
• Temporary construction zones
• Remote or unmanned AtoN sites

It is best suited to projects that need an independent AIS AtoN with integrated solar power rather than a terminal connected to an existing external power system.

Choose the DX903S when:

• The site requires Type 1 or Type 3 AIS AtoN
• No existing solar or battery system is available
• The unit will be installed on a buoy or fixed navigation mark
• Long autonomy is required during poor weather
• A compact, low-maintenance installation is preferred
• Position and status monitoring need to be integrated into the project system

For sites that already have a suitable DC power and solar system, a standalone AIS AtoN terminal may be a more economical option.