> For the complete documentation index, see [llms.txt](https://docs.brwall.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.brwall.com/specifications/video-wall-controller/br20-series.md).

# BR20 Series

### Specifications

<table><thead><tr><th width="150"></th><th width="150"></th><th></th></tr></thead><tbody><tr><td>Product hardware information</td><td>System structure</td><td>Pure hardware FPGA architecture</td></tr><tr><td></td><td>Start up</td><td>&#x3C;15s</td></tr><tr><td></td><td>Operating system</td><td>No CPU and operating system</td></tr><tr><td>Input/ Output Signal</td><td>Signal type</td><td>HDMI 1.3</td></tr><tr><td></td><td>Channel</td><td>4in 4 out,4 in 8 out,8 in 4 out</td></tr><tr><td>lmage processing</td><td>Display mode</td><td>Roaming, overlay,zoom in/out, multi-windowing, scene switch,PIP,full screen and combination screen</td></tr><tr><td></td><td>Input resolution</td><td>1080p</td></tr><tr><td></td><td>Scene/Signal switching time</td><td>Millisecond-level switching</td></tr><tr><td></td><td>Number of signal copy</td><td>Up to 8</td></tr><tr><td></td><td>Single-screen window</td><td>4 windows on each two screens</td></tr><tr><td></td><td>Signal preview</td><td>Optional</td></tr><tr><td>Controlfunction</td><td>Control structure</td><td>Software /Hardware</td></tr><tr><td></td><td>Control method</td><td>RS232/Network/ Keypad and compatible with third partycontrol system</td></tr><tr><td></td><td>Management mode</td><td>C/S, Mobile</td></tr><tr><td>Stability</td><td>Safety</td><td>Hardware structure, no virus interference</td></tr><tr><td></td><td>MTBF</td><td>50000h</td></tr><tr><td></td><td>Continuity</td><td>365 days,7x24 hours operation</td></tr><tr><td>Working environment</td><td>Operating temperature</td><td>-15~60℃</td></tr><tr><td></td><td>Storage temperature</td><td>-30~75℃</td></tr><tr><td></td><td>Operating humidity</td><td>10 to 90% without condensation</td></tr><tr><td></td><td>Storage humidity</td><td>5~95% without condensation</td></tr></tbody></table>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.brwall.com/specifications/video-wall-controller/br20-series.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.
