Northstar B744V Bronze Thru-hull Transducer - 50/200kHz dual frequency includes high speed fairing block and provides accurate speed, depth, and temp readings . Compatible with Northstar 491 Sounder Module. (Depth/Speed/Temp)
Northstar B744V Bronze ThruHull Triducer with fairing block. 50/200kHz dual frequency triducer (speed, depth, and temp) for 491.
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