The SLR 400Ni is tailored for shoreline AIS signal monitoring and is one of the latest MarineTraffic AIS receivers introduced in July 2022.

This compact device integrates a dual-channel VHF receiver and operates on the Raspberry Pi mini-computer platform. Featuring built-in Ethernet, WiFi, and USB interfaces, it effortlessly connects to any wired or wireless network. It allows data streaming to up to five user-defined destinations, excluding the reserved MarineTraffic data stream.

The unit offers flexibility. It can receive and decode all AIS transmissions from vessels equipped with Class A or Class B AIS transceivers, as well as AIDS to Navigation and SART. Users can employ the receiver's web UI for local plotting or utilize the software on their computers for visualization purposes.

The green LED (POWER) shows that the device is on. If no green light appears, recheck the power connection.

The two red LEDs (A/B) blink from time to time when it receives AIS data. If one of the red LEDs does not blink irregularly, check the antenna, the coax cable, and the cable connections. It indicates that the device receives no AIS data.

The orange and green LED on the network port is off if no network cable is connected or nothing is connected to the other end of the network cable. In this case, check the network cable and the connection.

The orange LED on the network port is permanently on when a connection has been established to a network device (e.g., switch).

The green LED on the network port flashes when a connection has been established (see orange LED). It does not mean that the data is being transmitted to MarineTraffic.