XSONIC Airmar B45

The XSONIC airmar B45 sensor is a compact bronze sensor for measuring water temperature and depth. It works on two frequencies of 50 kHz and 200 kHz, with a beam width of 12 and 45 degrees. Installed on the vessel by plunging into the hull.
The output power is 600 watts.

Technical details:

Frequency	50 kHz, 200 kHz
Beam width	50 кГц: 45 град., 200 кГц: 12 град. (-3 dB)
Resistance	200 Om (45 grad.), 375 Om (12 grad.)
Maximum depth	235-353 m (50 kHz), 118-206 m (200 kHz)
Ship size	up to 9 meters
Weight	2.5 kg
Dead angle	0-26 city.