Airmar B117 50/200kHz Bronze Low Profile Depth and Temperature Transducer - B117-DT-BBAirmar B117 50 200kHz Bronze Low Profile Depth and Temperature Transducer B117 DT BB Compatibility: Si Tex ES502, NavPro 900F 1200F, Interphase, Cobra, VDO Compatibility: Standard FF520 525, CPF180i, CPF190i, CPF300i, CPF390i The Airmar B117 features a 50 200 kHz, dual frequency, single ceramic element in a low profile bronze housing. The nearly flush design minimizes drag with only 5 mm (2 10") extending outside of the hull. Features Depth only or