# 3 Phase < 100A

<figure><img src="/files/0zeY8jB95Ff7SjLtpQ0a" alt=""><figcaption></figcaption></figure>

### Device Configuration

1. Hold down 'E' button to enter configuration mode. Pass code is 1000 by default.

<figure><img src="/files/kVAnXqGiAKjwDfEEbH8Z" alt=""><figcaption></figcaption></figure>

2. Set the address of the device. Must be less than 16 and unique compared to other devices connected to the same Opta DAU. If there is only 1 energy meter connected to an Arduino, it can be left as 001. If  a second is connected you will need to go into the menu (in the picture above) and set it to 002.

<figure><img src="/files/lFVEzBssctFAqRS1Xfiy" alt=""><figcaption></figcaption></figure>

3. Set Baud Rate to 19.2k

<figure><img src="/files/TPsGIholXyuoBB3w0Rsr" alt=""><figcaption></figcaption></figure>

### Documentation

User Manual:&#x20;

{% file src="/files/nCgcrhtAXGWi42Ohgdw9" %}

Datasheet:&#x20;

{% file src="/files/XRFN1ltShsGOtCAWEqMV" %}

Purchase link:

{% embed url="<https://uk.rs-online.com/web/p/energy-meters/2369297?gb=s&searchId=4ed501f2-f33b-4f2d-8706-3b7da2029cfe>" %}

Example Installs:

<figure><img src="/files/Tuxd3KWBaEBYTYwHb0uI" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/lO4lDQ7uCRBVv58dL2h0" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.output.industries/technical-onboarding/recommended-hardware/energy-monitors/3-phase-less-than-100a.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.