# Status LED

Holybro Microhard V1 Radio has 6 status LEDs, there are three blue, two orange, and one green LEDs.

Holybro Microhard V2 Radio has 7 status LEDs, there are three blue, three orange, and one green LEDs.

The meaning of the different LEDs is:

<div align="center"><img src="/files/Jaz4hq9Wq8OkYSjmuotu" alt=""></div>

#### Power LED (Green)

This LED will illuminate when the Radio is connected to a power source (7-35VDC).

#### TX LED (Orange)

When illuminated, this LED indicates that the Radio is transmitting data over the air.

#### RX LED (Orange)

This LED indicates that the Radio is synchronized and has received valid packets.

#### DIAG LED (Orange, V2 ONLY)

This LED indicates the connectivity of the USB port.\
When illuminated, the USB port provides access to the diagnostic port of the radio.\
When turned off, the USB port provides access to the serial data port of the radio.

#### RSSI LEDs (3x Blue)

As the received signal strength increases, starting with the furthest left, the number of active RSSI LEDs increases. Signal strength is calculated based on the last four valid received packets with correct CRC. The value of RSSI is reported in S123.

![](/files/NNRpizZpQCRTsM9dMECC)

#### RSSI LEDs(blue) - indicate the receive signal strength.

<table data-header-hidden><thead><tr><th></th><th width="150"></th><th width="157"></th><th></th></tr></thead><tbody><tr><td><strong>RSSI &#x3C;20%</strong></td><td>LED-20 off</td><td>LED-50 off</td><td>LED-100 off</td></tr><tr><td><strong>20%&#x3C;RSSI&#x3C;50%</strong></td><td>LED-20 on</td><td>LED-50 off</td><td>LED-100 off</td></tr><tr><td><strong>50%&#x3C;RSSI&#x3C;80%</strong></td><td>LED-20 on</td><td>LED-50 on</td><td>LED-100 off</td></tr><tr><td><strong>80%&#x3C;RSSI</strong></td><td>LED-20 on</td><td>LED-50 on</td><td>LED-100 on</td></tr></tbody></table>

###


---

# 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.holybro.com/radio/microhard-radio/status-led.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.