# LED indicator

| LED       | Color  | Description                       |
| --------- | ------ | --------------------------------- |
| Main led  | RGB    | Indicates the status of XBLink    |
| SYS led   | Green  | System led                        |
| LTE led   | Blue   | Status of the cellular connection |
| Power led | Yellow | On/Off                            |

![Main led](https://752643261-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1Ot9F_Ob2Aboz1SKNK%2F-Ma6iP-K_FmeDnZ5HLCc%2F-Ma70gUFR66pQ94bFh0l%2Fxblink_5_4%20-led.261.png?alt=media\&token=9a4648d3-234e-4d6f-91ff-503c7e51f0b0)

![SYS Led, LTE Led and POWER Led](https://752643261-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1Ot9F_Ob2Aboz1SKNK%2F-Ma6iP-K_FmeDnZ5HLCc%2F-Ma70JLwD0X9u0JtuNN0%2Fxblink_5_4%20-led.260.png?alt=media\&token=0f6c5027-f92c-41b5-bc7e-75475c512178)

### 1.Main Led

| **Color** | Blink                                                         | Solid                                       |
| --------- | ------------------------------------------------------------- | ------------------------------------------- |
| Red       | Start up, Initializing                                        | Error                                       |
| Blue      | Trying to establish cellular network                          |                                             |
| Green     | XBFirm process is running - waiting the singal from Pilot App | All good - XBLink is connected to Pilot App |

> If the network cannot be connected, please check your hardware connection (SIM card status, antenna) and apn configuration, the current network environment.

### **2.SYS led**

* Blinks - Normal operation
* Solid - Firmware Upload

### **3. LTE led**

* When the connection is established and data is being transmitted/received, this led will blink at special intervals. Otherwise, if there is no connection, the led will remain off.

### **4.Power led**

* Light - Power is OK
* Off - No power input