> For the complete documentation index, see [llms.txt](https://docs.yobiiq.com/user-manual-sd1001-smoke-detector/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yobiiq.com/user-manual-sd1001-smoke-detector/device/led-and-buttons.md).

# LED and Buttons

## LEDs

The device has a total of 2 status LED’s on the front of the device, a green LED and a red LED.

### Power / Network LED

The power / network led is a green led indicating the Network and Power status.

| Cause                   | Color | State           |
| ----------------------- | ----- | --------------- |
| Mains Power Detected    | Green | Solid           |
| No Mains Power Detected | -     | Off             |
| LoRaWAN Join Procedure  | Green | Blinking fast   |
| LoRaWAN Join Accepted   | Green | Blinking Slowly |

### Battery / Alarm LED

The battery / alarm led is a red led indicating the battery and alarm status.

| Cause                        | Color | State                          |
| ---------------------------- | ----- | ------------------------------ |
| Normal Operation             | Red   | Blinking every 60 seconds      |
| Hush / Silence Mode          | Red   | Blinking every 9 to 15 seconds |
| Battery not present or empty | Red   | Not flashing                   |

## Test Button

The test button can be used for the following actions;

* **Test Device** (press for 3 seconds)
* **Hush/Silence** (press for 3 seconds, only active in Alarm condition)


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