> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/omniscan-450/electrical-connection.md).

# Electrical Connection

Provided external connections are a 4-pin JST-GH for connection to a Blue Robotics Ethernet Switch or RJ45 adapter, and #6 spade connectors for connecting to power (10-30 Volts DC).

<figure><img src="/files/5GdRozfvG0KA0Gt1Sclv" alt=""><figcaption></figcaption></figure>

A converter is also provided for adapting from the 4-pin JST-GH to a standard RJ45.

![](/files/4HAsmjaeAnbZbBn2afFq)

Connection to the Omniscan 450 FS and Omniscan 450 SS circuit board is made through a 4-pin JST-GH for ethernet and a pair of stripped wires for power. Pinout is shown below.

<figure><img src="/files/2aD9YGMDiWC2Iv1jNawW" alt=""><figcaption></figcaption></figure>

Internal connection for the OS 450 Compact uses a 2-pin JST-GH for power as show below.

<figure><img src="/files/gTNNkQE0qQ2BVvHDKKEj" alt=""><figcaption></figcaption></figure>

Omniscan FS internal connections to the circuit board are shown below.&#x20;

<figure><img src="/files/2JqvfEPrUiqnXmnbgQJs" alt=""><figcaption></figcaption></figure>

And below are Omniscan SS connections to the circuit board.

<figure><img src="/files/JYMhy6Jii5lf6OtTuZRM" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Note: polarity of the transducer+ and transducer- wires is not critical, and some versions may have a black wire instead of a white wire.
{% endhint %}

When attaching the stripped wires to the circuit board, the wires are inserted one at a time into their respective connector. Press down on the button corresponding to the wire you wish to insert with either your finger or a flat-blade screwdriver, insert the wire until it stops, then let go of the button.