Raymarine B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg
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Raymarine · Code T70077
Pair Medium + High · 20°
B175 · Pair Medium + High · 20°. Select the tilt according to the hull's deadrise angle and the installation instructions.
Transducers · Transducer
Fishfinders & Sonar · Instruments & Networks
Image of Raymarine's bronze B175 (L/M/H) range. The image shows one transducer; the entry is for a pair. Frequencies, angle and connections are confirmed for each part number.
Image: Raymarine
Discover the product
Bronze transducer Raymarine B175, for through-hull installation. Part number T70077 identifies the specific connection and installation version.
Compatible equipment
Documented connections for specific catalogue codes, including parts, requirements and manufacturer sources. Selected equipment ranges are covered; an unlisted combination does not imply incompatibility. Each connection path is assessed separately and is not a complete installation design.
5 documented connections · Sources checked: 2026-10-11
Explore connections, components & diagrams ↗
Equipment connection guide ↗
B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg · T70077
Axiom 2 Pro RVM · Direct
1 kW sonar · 11-pin
Included with T70077:1 × A102146 — CP470/CP570 Y-Cable
Functions: Dual-band CHIRP sonar
Electrical compatibility does not confirm suitability for the hull. Check material, deadrise and mounting position in the transducer guide.
Applies to this specific Raymarine code with its factory cable. Another version or code of the same model requires a separate check.
Complete packages T70075/T70076/T70077 include Y-cable A102146. A80328 is not added to the pair’s connection path.
Axiom 2 Pro RVM — transducers by port · 87443 Rev 7
CHIRP — exact codes and required cables · 87443 Rev 7
Axiom 2 Pro transducer cables — part numbers · 87443 Rev 7
B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg · T70077
RVM1600 · Direct
CHIRP · 11-pin
Included with T70077:1 × A102146 — CP470/CP570 Y-Cable
Functions: Dual-band CHIRP sonar
Electrical compatibility does not confirm suitability for the hull. Check material, deadrise and mounting position in the transducer guide.
This connection applies to the exact Raymarine code with its factory cable.
The module needs a separate power supply and a compatible display through RayNet; this path describes the transducer-to-module connection.
CHIRP transducers · 87436 Rev 2
Required cables — CHIRP transducers · 87436 Rev 2
B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg · T70077
RVX1000 · Direct
CHIRP · 11-pin
Included with T70077:1 × A102146 — CP470/CP570 Y-Cable
Functions: Dual-band CHIRP sonar
Electrical compatibility does not confirm suitability for the hull. Check material, deadrise and mounting position in the transducer guide.
This connection applies to the exact Raymarine code with its factory cable.
The module needs a separate power supply and a compatible display through RayNet; this path describes the transducer-to-module connection.
CHIRP transducers · 87349 Rev 3
Required cables — CHIRP transducers · 87349 Rev 3
B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg · T70077
Axiom 2 RV · Through a module
NETWORK · Gigabit RayNet
Included with T70077:1 × A102146 — CP470/CP570 Y-Cable
Additionally required:1 × E70665 — RVM1600 RealVision Black Box Sonar
Included with E70665:1 × A62361 — Raynet (F) to Raynet (F) cable - 2m
Functions: Dual-band CHIRP sonar
Electrical compatibility does not confirm suitability for the hull. Check material, deadrise and mounting position in the transducer guide.
This connection applies to the exact Raymarine code with its factory cable.
The module needs a separate power supply and a compatible display through RayNet; this path describes the transducer-to-module connection.
All displays on the same network need the same compatible LightHouse version. LightHouse 4 and 5 must not be mixed; first-generation Axiom/Axiom+/Pro/XL remain on LightHouse 4.
The transducer connects to RVM1600, not to the display. The module requires independent power.
RVM1600 firmware now uses independent numbering from LightHouse. Check the compatible version in the peripheral update package.
Network connections · 87504 Rev 1
Hardware and software compatibility · 81432 Rev 2
Compatible peripheral product software · 81432 Rev 2
Networking constraints · 81432 Rev 2
RayNet — cables and compatible products · Official manufacturer page · checked 2026-10-10
CHIRP transducers · 87436 Rev 2
Required cables — CHIRP transducers · 87436 Rev 2
B175 Depth & Temperature Bronze Low Profile Through Hull Transducer pair 20 deg · T70077
Axiom 2 without built-in sonar · Through a module
NETWORK · Gigabit RayNet
Included with T70077:1 × A102146 — CP470/CP570 Y-Cable
Additionally required:1 × E70665 — RVM1600 RealVision Black Box Sonar
Included with E70665:1 × A62361 — Raynet (F) to Raynet (F) cable - 2m
Functions: Dual-band CHIRP sonar
Electrical compatibility does not confirm suitability for the hull. Check material, deadrise and mounting position in the transducer guide.
This connection applies to the exact Raymarine code with its factory cable.
The module needs a separate power supply and a compatible display through RayNet; this path describes the transducer-to-module connection.
All displays on the same network need the same compatible LightHouse version. LightHouse 4 and 5 must not be mixed; first-generation Axiom/Axiom+/Pro/XL remain on LightHouse 4.
The transducer connects to RVM1600, not to the display. The module requires independent power.
RVM1600 firmware now uses independent numbering from LightHouse. Check the compatible version in the peripheral update package.
Network connections · 87504 Rev 1
Hardware and software compatibility · 81432 Rev 2
Compatible peripheral product software · 81432 Rev 2
Networking constraints · 81432 Rev 2
RayNet — cables and compatible products · Official manufacturer page · checked 2026-10-10
CHIRP transducers · 87436 Rev 2
Required cables — CHIRP transducers · 87436 Rev 2
Functions & interfaces
Transducer
Technical specifications
Equipment type
Depth transducers
Package
Pair sensors
Frequency bands
Medium + High
Element tilt
20°
Material
Bronze
Installation
Through-hull installation
Version confirmation
Before you choose, we will confirm the exact part number and current version with you.
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Kit contents, interfaces and required accessories are checked for the exact part number. Connection to another system does not mean all functions are built in.
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