AMEC B620W Class B AIS Transceiver w/WI-FI - 2W CSTDMA, NMEA2000, NMEA 0183, USB [AMEC-B620W-010] Marine Plumbing & Ventilation | Livewell Pumps MA-4054 is a 4" cone

MA-4054 is a 4" cone size two-way coaxial speaker

When loss of DC voltage is sensed by the ERC

Sealed oil bath and marine grade hard anodised

Ideal for focus areas such as pedestals and trimming positions

This feature provides up to 10 depth ranges

AMEC B620W Class B AIS Transceiver w/WI-FI - 2W CSTDMA, NMEA2000, NMEA 0183, USB [AMEC-B620W-010] Marine Plumbing & Ventilation | Livewell Pumps MA-4054 is a 4" coneB620W Class B AIS Transceiver with WI FI 2W CSTDMA, NMEA2000, NMEA 0183, USB **As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at the time of purchase. A copy of the MMSI Registration or FCC Ship Station License is required, along with the vessel master or owner's signature on the completed programming form.** Click here to download form. The B620W is the B620