ST5501K - Screen BENQ - Free user manual and instructions
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| Product Type | 55-inch 4K UHD Professional Display |
| Screen Size | 55 inches (diagonal) |
| Resolution | 3840 x 2160 pixels (4K UHD) |
| Panel Type | IPS (In-Plane Switching) |
| Brightness | 350 cd/m² (typical) |
| Contrast Ratio | 1200:1 |
| Viewing Angle | 178° horizontal / 178° vertical |
| Response Time | 8 ms (gray-to-gray) |
| Aspect Ratio | 16:9 |
| Operating Hours | 24/7 continuous operation |
| Input Ports | 2 x HDMI, 1 x DisplayPort, 1 x USB, 1 x RS-232, 1 x LAN, Audio input |
| OPS Slot | Compatible with Open Pluggable Specification (OPS) for slot-in PCs |
| Built-in Speakers | 10 W x 2 (optional) |
| Power Supply | 100–240V AC, 50/60 Hz |
| Power Consumption | 160 W (typical), <0.5 W in standby |
| Dimensions (W x H x D) | 1245.3 x 715.3 x 67.5 mm (without stand) |
| Weight | 29.5 kg (without stand) |
| VESA Mount | 400 x 400 mm (M6 screw holes) |
| Operating Temperature | 0°C to 40°C |
| Accessories Included | Remote control, power cable, quick start guide, user manual |
| Mounting | Supports landscape and portrait orientation |
Frequently Asked Questions - ST5501K BENQ
How do I clean the BenQ ST5501K screen properly?
To clean the screen, first turn off the display and unplug the power cord. Use a soft, dry microfiber cloth to gently wipe the surface. For stubborn stains, slightly dampen the cloth with water or a mild screen cleaner. Do not spray liquid directly on the screen, and avoid using abrasive materials or strong solvents as they can damage the anti-glare coating.
Can the ST5501K be used for 24/7 operation?
Yes, the BenQ ST5501K is designed for professional signage and supports 24/7 continuous operation. It features industrial-grade components and thermal management to ensure reliable performance in digital signage environments.
What is the best way to connect external devices to the display?
The display provides multiple connection options including 2 HDMI inputs, a DisplayPort, USB, RS-232, and LAN. For 4K content, use a high-speed HDMI or DisplayPort cable. For control and networking, connect via RS-232 or LAN to integrate with external control systems.
Can I mount the ST5501K in portrait orientation?
Yes, the display supports both landscape and portrait installation. When mounting in portrait mode, ensure that the VESA mount (400 x 400 mm) is properly secured and that the screen is rotated without obstructing ventilation. The built-in orientation sensor can automatically adjust the on-screen display for portrait viewing.
Does the ST5501K have built-in speakers?
The ST5501K comes with optional built-in speakers rated at 10W x 2. If your unit does not include speakers, you can connect external audio equipment via the audio input or HDMI audio output.
What is the recommended maintenance for the display?
Regular maintenance includes dusting the vents and screen, checking cables for secure connections, and ensuring adequate ventilation. It is also advisable to run a pixel refresh or screen saver if the display shows static images for extended periods to prevent image retention.
Can I use the OPS slot for a media player?
Yes, the OPS (Open Pluggable Specification) slot allows you to install a compatible slot-in PC or media player directly into the display. This simplifies installation and reduces cabling, making it ideal for signage applications.
What should I do if the screen does not power on?
First, check that the power cable is firmly plugged into both the display and the wall outlet. Then verify that the power switch on the rear of the display is turned on. If the display still does not power on, test the outlet with another device and try a different power cable. If the issue persists, contact BenQ support.
How can I control the display remotely?
The ST5501K supports RS-232 and LAN (Ethernet) for remote control and monitoring. You can send commands via the RS-232 serial protocol or use the built-in web interface when connected to a network. This allows integration with control systems for power on/off, input selection, and volume adjustment.
Is the BenQ ST5501K suitable for outdoor use?
The ST5501K is designed for indoor use only. It operates between 0°C and 40°C and is not rated for outdoor environments. For outdoor applications, consider a dedicated outdoor display with higher brightness and weatherproofing.
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USER MANUAL ST5501K BENQ
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Product information
Brand : BENQ
Model : ST5501K
Category : Screen