Bronze Sensor B744V - Mortise multisensory sensor for measuring depth, speed and temperature. Used for Simrad, Lowrance and Raymarine ThruHull-DST B744V echo sounders. It operates at frequencies of 50/200 KHz with a viewing angle of 15 ° and 45 °, which allows it to operate in salt water and at high speeds. 

Specifications:
Output power 600 W,
Frequency 50 \ 200 kHz,
Maximum depth 235-353 m (50 kHz), 118-206 m (200 kHz),
Weight 2.5 kg,
Ship size up to 9 meters.