SB-181 TX Switch Box
The TX Switch Box SB-181 is specifically made to work with AMEC AIS Class B transceivers, both the 2W and 5W series. With its simple and robust design, silent mode (AIS transmission disabled) can be activated easily.
Owner's Manual (pdf)
![AMEC SB-181 TX Switch Box [AMEC-SB181-010] - Essenbay Marine](http://essenbaymarine.com/cdn/shop/files/114147XL_{width}x.jpg?v=1778808515)
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