Status Indicator Description
The QE3 Screen Remote Controller is equipped with several status indicators at different locations on the enclosure to provide quick feedback on battery level, charging status,…
4 min read · English documentationThe QE3 Screen Remote Controller is equipped with several status indicators at different locations on the enclosure to provide quick feedback on battery level, charging status, data link status, and other information. Indicator patterns may be customized for different firmware versions or system configurations. This section only summarizes the general layout and meanings. Refer to the markings and labels on the actual device and the accompanying documentation for specific details.

Front-Panel Multifunction Indicator Group (Corresponding to the Diagram Numbers)
Based on the numbers in the appearance diagram, the typical correspondence for the front-panel multifunction indicator group is as follows (see the area containing No. 13 in “Front Area”):
| No. in Diagram | Name | Brief Description of Typical Meaning |
|---|---|---|
| 47 | Data Link Selection Indicator | Indicates whether the currently selected data link / data transmission system uses the external or internal data link / data transmission system |
| 48 | Trainer Control Indicator | Indicates the connection and operating status of trainer control mode or the trainer-side link |
| 49 | RSSI Indicator | Provides an approximate indication of the current wireless signal strength through its on/off state or color changes |
| 50 | Battery Level Indicator | Uses multiple illuminated segments to indicate the current battery level range and low-battery / warning status |
The following table summarizes common states of the various front-panel indicators (general examples only):
| Indicator Type | Typical State | Description |
|---|---|---|
| Battery level indicator (not charging, battery level display) | All four segments illuminated | Each segment represents 25% battery capacity. Four illuminated segments indicate a battery level of ≥ 75% |
| Three segments illuminated | Battery level 50% ~ 74% | |
| Two segments illuminated | Battery level 25% ~ 49% | |
| One segment illuminated | Battery level 10% ~ 24%; the battery level is low, so consider recharging or ending the mission | |
| Battery level indicator (not charging, low-battery warning) | Last red segment flashing | Battery level below 15%, accompanied by a vibration alert to prompt immediate action |
| Last red segment flashing rapidly | Battery level below 10%, accompanied by a continuous “vibration + audible alert” alarm; exit the mission immediately | |
| Battery level indicator (charging status display) | Charging, sequential flashing | The segments flash in sequence starting from those corresponding to the current battery level. For example, when the battery level is 25%~50%, segments 1 and 2 flash alternately |
| All four segments steadily illuminated (green/white) | Fully charged, indicating that the battery is fully charged | |
| Data link status indicator | Steady green | Power to the built-in data link is on |
| Steady blue | Power to the external data link is on | |
| Trainer control indicator | Steady green | The device is in student mode, and the 3.5mm port outputs a PPM signal |
| Steady blue | The device is in trainer mode and is receiving a valid PPM signal through the 3.5mm port; the trainer function is available | |
| Steady red | The device is in trainer mode but is not receiving a valid signal through the 3.5mm port, so control cannot be switched to the student |
When a charger is connected, the battery level indicator also switches to a charging status display (actual behavior is subject to the documentation for the battery and adapter):
- Multiple segments remain illuminated according to the current battery level range and flash in a flowing sequence to indicate that charging is in progress;
- When all segments become steadily illuminated, the battery is generally fully or nearly fully charged.
Other Common Indicator Types (Reusable Structure)
In addition to the front-panel multifunction indicator group, independent status indicators may be located elsewhere on the enclosure. Common types covered in this manual include:
- Power / battery level indicator: Shows the device's current battery level or whether it is powered on;
- Charging status indicator: Indicates whether charging is in progress or the battery is nearly fully charged when power is connected;
- Link indicator: Indicates the connection and communication status of the data link / data transmission link;
- Data link / module indicator: Provided by an external or built-in data link module to show connection quality, operating mode, and other information;
- Firmware upgrade indicator: Indicates whether the device is currently in firmware upgrade mode.
Summary of Example Indicator Patterns (For Reference Only)
The following are examples of common indicator patterns for different types of indicators. Refer to the accompanying documentation for actual behavior:
Note: When the device enters firmware upgrade mode, the status indicators display fixed colors and no longer change.
- Power / battery level:
- Steady: The device is powered on and operating normally;
- Slowly flashing: When the screen is off / on;
- Rapidly flashing: During power-on / shutdown or to indicate an abnormal condition.
- Charging:
- Green flowing sequence: Charging;
- Steady green: Nearly fully charged;
- Flashing or an abnormal color: Abnormal charging current, adapter mismatch, or a similar condition.
- Firmware upgrade
- Upper indicators: From left to right: red, blue, green, red, blue, green;
- Lower indicators: From left to right: red, blue, green, red.
Usage Recommendations
- When reading this section, also check the markings and labels on the enclosure or the accompanying documentation to confirm the specific name and location of each indicator;
- If an indicator continuously flashes an alarm pattern or displays abnormal color changes, consult the troubleshooting chapter first. Stop the mission and contact technical support if necessary;
- If the delivered configuration uses customized indicator patterns, the dedicated accompanying documentation takes highest priority.
