LED behavior
This chapter describes the basic display operations.
Power button
LED status
Display status
Description
On
The display is powered on and awake.
Asleep
The display is powered on and in sleep mode.
Powered off
The display is powered off, connected to a power source, and the power switch is on.
Power switch off
The power switch is off or the display is not connected to a power source.
Operations
Operation
User Action
Result
Power on
Press the button while the display is powered off.
The displays powers on.
Sleep
Press the button while the display is powered on and active.
The display goes into sleep mode.
Wake up
Press the button while the display is in sleep mode.
The display wakes up.
Power off
Press and hold the power button for 3 seconds.
A countdown timer appears and powers off the display in 3 seconds.
Force power off
Important
Use this method only when the display is unresponsive.
Press and hold the power button for 10 seconds.
If this fails, use the power switch at the bottom of the display.
The display shuts down.
User interface
Home screen
The ST04 smart signage provides users with direct access to files and BenQ applications from the home screen, without requiring a login. The home screen features three main components:
- Network connection status
- For internet connection issues, see Connecting to the internet.
- Date and time
- Apps
- For available BenQ Apps, see BenQ App Store.
- For displaying multimedia contents, see Multimedia players.
- For display setting details, see Settings.
- More
Select Moreto view all apps on the smart signage.
Changing the wallpaper
1. Select More 
2. Scroll down and find Wallpaper.
3. Select a wallpaper image.
Note
The image list only appears when there are image files saved on the display or on any connected USB device.
4. Select Set wallpaper to save the changes.
Managing notifications
The smart signage automatically receives the latest firmware and apps updates once it is connected to the internet.
UI element
Description
Pop-up messages
Enable/Disable pop-up notifications.
Show/Hide the update details.
Update
Select this to download and install the update.
Warning
- The firmware update requires a system restart. Make sure to save all important data before proceeding.
- The update process may take a few minutes to complete. Ensure that there are no interruptions. Do not power off the device or disconnect from the internet to prevent permanent damage to the display.
Select this to delete the notification.
Clear All
Select this to clear all notifications.
Tip
In case an update is deleted from the list, it can still be installed through the Settings menu. For details, see Updating the firmware.
Connections
The smart signage has several ports that can be used to input and output data and media.
Video connection
Connect the input device to any of the HDMI ports on the left panel.
Audio connection
Use either method below to establish your audio connection:
Connection
Configuration
HDMI 1 (ARC)
- Connect a soundbar to the HDMI 1 (ARC) port on the left panel to transmit audio from the display to the external speaker.
- Go to Display > Advanced settings, ensure that HDMI CEC & HDMI ARC are enabled. For details, see Display settings.
3.5 mm audio out jack
Connect the audio output device to the 3.5 mm audio out jack on the left panel.
Device management
Connect the management console using the RS-232 port on the left panel. This connection allows administrators to configure the display settings with their laptop or local management console.
USB connection
Connect your USB devices to the USB 2.0 ports on the left panel.
Note
When connecting devices to the any of the display’s USB ports, ensure the following:
- Use a USB extension cable when connecting oversized USB dongles or sticks. The cable length is recommended to be less than 5 m (16.4 ft) for USB 2.0 slots.
- The smart signage limits the number of USB connections. If all USB slots are occupied and a USB hub is connected to the display, it will not recognize any new USB input devices.
- The USB 2.0 slots support up to 0.9A.
Remote control
- Power button
- Play button
- Previous button
- Stop button
- Connection button
- Home button
- Menu button
- Direction buttons
- All apps button
- Mute button
- Freeze screen button
- Number buttons
- Screenshot button
- Blank screen button*
- Volume down button
- Volume up button
- Custom button
Opens the designated app. Default app is InstaShare 2. - OK button
- Picture mode button
- Return button
- Sidebar button
- Pause button
- Next button
- Status LED
Note
* The behavior of the blank screen button can be configured in the Display settings menu. For details, see Configuring the remote control blank screen setting.
Install remote control batteries
- Open the remote control battery cover.
- Insert the batteries, ensuring the positive and negative ends are facing in the correct direction.
- Put the cover back on.
Usage guidelines
- Keep the remote control cool and dry at all times. Prolonged exposure to direct heat and humidity may cause it to malfunction.
The following guidelines are only applicable when using the IR sensor. - Keep the IR sensor away from direct sunlight or a strong light source as this may disrupt the remote control signal. Adjust the room lighting or the placement of the display to ensure proper communication with the IR sensor.
- The maximum remote control distance is 8 m (26.2 ft) from the IR sensor.
- The remote control must be within the horizontal range of 60 degrees and the vertical range of 30 degrees to ensure proper transmission to the IR sensor.
