What are the key features of the SID-21WR2?

The SID-21WR2 is a 21.5" Full-HD (1920x1080) TFT semi-industrial fanless Android panel PC with a Rockchip RK3568 quad-core Cortex-A55, 2GB DDR4, 32GB eMMC, a PCAP 10-point multi-touch panel, Gigabit LAN, USB 3.0, RS-232/RS-485, HDMI 2.0, an IP65 front, and a rugged metal enclosure running Android 11 or Debian 11.

Which processor does the SID-21WR2 use?

It uses the Rockchip RK3568, an ARM SoC with a quad-core Cortex-A55 (up to 2.0GHz) and a Mali-G52 GPU for smooth fanless performance.

How much memory and storage does the SID-21WR2 have?

It comes with 2GB DDR4 memory and 32GB eMMC storage.

What operating systems does the SID-21WR2 support?

It supports Android 11 and Debian 11, suitable for self-service kiosk and digital signage applications.

What display and touch does the SID-21WR2 offer?

A large 21.5" 1920x1080 Full-HD TFT panel with a high 3000:1 contrast ratio and projected-capacitive 10-point multi-touch, with an IP65-rated front panel.

Is the SID-21WR2 rugged?

Yes, it has a metal construction with an IP65-rated front panel and fanless operation, suited to semi-industrial deployment.

Does the SID-21WR2 support RS-485?

Yes, in addition to an RS-232 (DB9) port it provides a dedicated RS-485 (DB9) port for industrial serial peripherals.

What power input does the SID-21WR2 use?

A wide +12V ~ +24V DC input via a lockable DC jack (60W 12V@5A adapter).

What applications is the SID-21WR2 best suited for?

As a large rugged fanless Android display, it suits self-service kiosks, digital signage, wayfinding, and interactive public-facing terminals.

What is an Industrial Panel PC?

An Industrial Panel PC is a robust computing device designed for industrial environments, featuring a touchscreen display integrated with a computer. These systems are built to withstand harsh conditions including dust, moisture, temperature extremes, and vibration, while providing reliable operation for factory automation, control systems, and HMI applications.

What makes a Panel PC 'industrial grade'?

Industrial grade Panel PCs feature rugged construction with IP65/IP66 front panel protection, extended temperature operation, shock and vibration resistance, fanless cooling for reliability, wide voltage input tolerance, and long product lifecycles designed for 24/7 operation in challenging environments.

What is the difference between a Panel PC and an HMI?

While both provide operator interface functionality, a Panel PC is a full-featured computer running a standard operating system (Windows, Linux) that can host any software application. An HMI is typically a simpler device with an embedded operating system designed specifically for machine/process control with limited functionality beyond its control software.

What mounting options are available for Panel PCs?

Panel PCs typically offer multiple mounting options including panel mount (cutout installation in cabinets/enclosures), VESA mount (standard bracket mounting to walls or arms), and sometimes desktop stands. Some specialized models may offer additional mounting options for specific industries.

What operating systems are supported on industrial Panel PCs?

Most industrial Panel PCs support Windows 10 IoT Enterprise, Windows 11 Pro, and various Linux distributions like Ubuntu. The specific OS support depends on the hardware configuration, with some models offering pre-installed options or being compatible with multiple operating systems.

What is IP65/IP66 protection and why is it important?

IP65/IP66 protection ratings indicate dust-tight (6) protection and resistance to water jets (5/6). This is essential for industrial Panel PCs that may be exposed to harsh factory environments with dust, splashes, or washdown procedures, ensuring reliable operation and longevity in challenging conditions.

Why are fanless designs important in industrial Panel PCs?

Fanless designs eliminate moving parts that could fail, prevent dust and contaminant ingress through ventilation openings, reduce maintenance requirements, increase reliability in high-vibration environments, and allow sealed enclosures for protection against harsh industrial conditions.

What is PCAP multi-touch technology?

PCAP (Projected Capacitive) multi-touch technology allows multiple simultaneous touch points on the screen, enabling intuitive gestures like pinch-to-zoom. It offers better optical clarity than resistive touchscreens, with a durable glass surface resistant to scratches, though it requires bare finger or special stylus operation.

What is a watchdog timer and why is it important?

A watchdog timer is a hardware-based timer that triggers a system reset if the software becomes unresponsive. This is crucial for industrial systems requiring high reliability and 24/7 operation, as it automatically recovers from software crashes or freezes without human intervention.

What does wide voltage input range mean for Panel PCs?

A wide voltage input range (typically 9-36VDC) allows Panel PCs to operate reliably in industrial environments with fluctuating power conditions. This provides flexibility in power source options and protection against voltage spikes and drops common in factory settings.

What is TPM and why is it included in industrial Panel PCs?

TPM (Trusted Platform Module) is a security chip that provides hardware-based encryption capabilities and secure storage for authentication credentials. In industrial settings, it helps protect sensitive data, secure communication channels, and ensure the integrity of control systems against unauthorized access.

How are Panel PCs typically mounted in industrial environments?

Panel PCs are typically installed using panel mount (where the unit is fitted into a cutout in a control cabinet with mounting clips or screws), VESA mount (attached to arms or wall mounts using standardized mounting patterns), or sometimes with custom mounting solutions for specific applications.

What cutout dimensions are needed for panel mounting?

Cutout dimensions vary by model and screen size. It's essential to refer to the specific Panel PC's installation guide for precise measurements. Most manufacturers provide detailed dimensional drawings showing the exact cutout size and mounting hole positions required.

What environmental conditions should be considered when installing Panel PCs?

Consider operating temperature range, humidity levels, exposure to dust or liquids, vibration/shock conditions, available power supply stability, electromagnetic interference sources, and ambient light conditions that might affect screen visibility when installing Panel PCs.

Do Panel PCs require additional cooling?

Most industrial Panel PCs are designed with fanless cooling systems that dissipate heat through the chassis. While they typically don't require additional cooling, it's important to ensure adequate air circulation around the unit and to avoid installing them in locations that exceed their specified operating temperature range.

What power supply requirements should be considered for Panel PCs?

Consider voltage requirements (typically 9-36VDC), current/power consumption specifications, power supply stability, surge protection needs, and whether battery backup or uninterruptible power supply (UPS) is necessary for critical applications to prevent data loss during power interruptions.

What should I do if the touchscreen becomes unresponsive?

First, try restarting the Panel PC. If the issue persists, check if the touch driver is installed and functioning properly, verify the touchscreen cable connection, ensure the operating environment is within specifications (especially for capacitive screens in high humidity), and check for physical damage to the screen surface.

How can I resolve overheating issues with fanless Panel PCs?

To address overheating: ensure the Panel PC is installed with adequate clearance for passive cooling, check that the ambient temperature is within specified operating range, clean dust buildup on cooling fins/chassis, verify that CPU-intensive applications aren't causing excessive load, and consider adding external cooling to the enclosure if necessary.

What causes Panel PCs to restart unexpectedly?

Unexpected restarts can be caused by unstable power supply, overheating, hardware failures, software issues, or watchdog timer activations due to system hangs. Check power stability, environmental conditions, system logs for error messages, and consider disabling the watchdog timer temporarily for diagnostic purposes.

How can I improve the visibility of the Panel PC screen in bright environments?

To improve visibility in bright environments, adjust the screen brightness to maximum, install an anti-glare shield or hood, position the Panel PC to avoid direct light sources, consider a higher-brightness model (500+ cd/m²) for new installations, or apply an anti-reflective film designed for industrial displays.

What should I do if Windows fails to boot on my Panel PC?

If Windows fails to boot, try booting in Safe Mode, use System Restore to revert to a working state, run startup repair from recovery options, check for hardware issues (particularly storage drives), verify BIOS/UEFI settings are correct, or restore from a system image backup if available.

Avalue · Panel PC / Monitor / Mobile

SID-21WR2

Data Sheet

*Price on request. Contact us for a quote.

Manufacturer: Avalue

Highlights

21.5" Full-HD (1920x1080) TFT PCAP 10-point multi-touch panel PC, fanless
Rockchip RK3568 Arm quad-core Cortex-A55, up to 2.0GHz
2GB DDR4, 32GB eMMC
Mali-G52 GPU (OpenGL ES 3.2, Vulkan 1.1, OpenCL 2.0)
Android 11 / Debian 11
Realtek Gigabit LAN, 2x USB 3.0, RS-232 + RS-485 (DB9), HDMI 2.0
Optional Wi-Fi 802.11ac / BT 5.0
Metal construction, front panel IP65
Wide +12 ~ +24V lockable DC input, fanless; CE / FCC Class B

Product Description

The Avalue SID-21WR2 is a 21.5" Full-HD semi-industrial touch panel PC powered by the Rockchip RK3568 (quad-core Arm Cortex-A55 up to 2.0GHz) processor, designed as a large, fanless front-end for self-service kiosks and digital signage.

With 2GB DDR4, 32GB eMMC, and Android 11 or Debian 11 support, it delivers a responsive app experience in a rugged metal enclosure with an IP65 front.

The 1920x1080 PCAP 10-point multi-touch panel pairs with a Mali-G52 GPU and a high 3000:1 contrast display.

Connectivity includes Realtek Gigabit LAN, 2x USB 3.0, a headphone jack, RS-232 and RS-485 (DB9) COM ports, HDMI 2.0, and optional Wi-Fi/BT 5.0. A wide +12~24V lockable DC input and fanless operation make the SID-21WR2 a durable, low-maintenance large-format interactive display.

Technical Specifications

Processor

Rockchip RK3568 Arm Quad Cortex-A55, up to 2.0GHz

System Memory

2GB DDR4

Storage

32GB eMMC

Graphic Chipset

Mali-G52 support OpenGL ES 1.1/2.0/3.2, Vulkan 1.0/1.1, OpenCL 2.0

Speaker Output

2 x 4Ω 2W (Optional)

LAN Chipset

Realtek RTL8211F-CG

Ethernet Interface

10/100/1000 Base-Tx GbE compatible

DC Input

+12V ~ +24V

DC Input Connector

Lockable DC Jack

Adapter

Input: 100~240 Vac/50~60 Hz Output: 60W Adapter (12V @ 5A Adapter)

OS

Android 11 / Debian 11

Certification Information

CE, FCC Class B

LCD Size

21.5"

LCD Panel

TFT

Resolution

1920 x 1080

Pixel pitch

0.24795 (H) x 0.24795 (V) mm

Luminance

250 cd/m²

Contrast ratio

3000

Viewing angle

89 (U), 89 (D), 89 (L), 89 (R)

Response time

30 ms

Backlight

LED

Touch Type

Projective capacitive multi-touch up to 10 points

Touch Light Transmission

86%

USB Port

2 x USB 3.0

Audio Port

1 x Headphone Jack

LAN Port

1 x RJ45

COM Port

1 x RS-232 (DB9)

1 x RS-485 (DB9)

HDMI

1 x HDMI 2.0

Antenna

2 x Wi-Fi/BT Antenna

DC input

1 x DC Jack

Other

1 x Power button with LED

1 x Reset button

WLAN

Optional Wi-Fi 802.11ac/a/b/g/n

Bluetooth

Optional BT 5.0

Operating Temp.

0°C ~ 40°C (32°F ~ 104°F)

Storage Temp.

-20°C ~ 60°C (-4°F ~ 140°F)

Operating Humidity

40°C @ 95% Relative Humidity, Non-condensing

Dimension (W x L x H)

535.3 x 329.3 x 48.1 mm

Weight

7.2 kg

IP Rating

Front panel IP65

VESA

100 x 100

Power Requirement

DC +12 ~ +24V

Power Mode

AT/ATX (AT is default)

System Fan

Fanless

Color

Black

Construction

Metal

Packing List

1 x AC/DC 60W Adapter 12V/5A

1 x Power Cord

Ordering Information

SID-21WR2-6803-A1R : SID-21WR2 DC In, Android 11

What is SID-21WR2?

The SID-21WR2 is a panel pc / monitor / mobile manufactured by Avalue, designed specifically for industrial-panel-pc applications. The Avalue SID-21WR2 is a 21.5" Full-HD semi-industrial touch panel PC powered by the Rockchip RK3568 (quad-core Arm Cortex-A55 up to 2.0GHz) processor, designed as a large, fanless front-end for self-service kiosks and digital signage. With 2GB DDR4, 32GB eMMC, and Android 11 or Debian 11 support, it delivers a responsive app experience in a rugged metal enclosure with an IP65 front. The 1920x1080 PCAP 10-point multi-touch panel pairs with a Mali-G52 GPU and a high 3000:1 contrast display. Connectivity includes Realtek Gigabit LAN, 2x USB 3.0, a headphone jack, RS-232 and RS-485 (DB9) COM ports, HDMI 2.0, and optional Wi-Fi/BT 5.0. A wide +12~24V lockable DC input and fanless operation make the SID-21WR2 a durable, low-maintenance large-format interactive display.

Key Features & Benefits

21.5" Full-HD (1920x1080) TFT PCAP 10-point multi-touch panel PC, fanless
Rockchip RK3568 Arm quad-core Cortex-A55, up to 2.0GHz
2GB DDR4, 32GB eMMC
Mali-G52 GPU (OpenGL ES 3.2, Vulkan 1.1, OpenCL 2.0)
Android 11 / Debian 11
Realtek Gigabit LAN, 2x USB 3.0, RS-232 + RS-485 (DB9), HDMI 2.0
Optional Wi-Fi 802.11ac / BT 5.0
Metal construction, front panel IP65
Wide +12 ~ +24V lockable DC input, fanless; CE / FCC Class B

Applications & Use Cases

The SID-21WR2 is ideal for various industrial automation applications:

Harsh industrial environments requiring dust and water protection
Dust-sensitive environments and silent operation requirements
DC-powered industrial installations and mobile applications
Wireless connectivity and remote monitoring applications
Legacy equipment integration and serial communication
Networked industrial systems and data communication
Interactive control interfaces and operator panels
Peripheral device connectivity and data transfer

Highlights

Product Description

Technical Specifications

System Information

Processor

System Memory

Storage

Storage

Display

Graphic Chipset

Audio

Speaker Output

Ethernet

LAN Chipset

Ethernet Interface

Power Requirement

DC Input

DC Input Connector

Adapter

Software Support

OS

Certification

Certification Information

Panel

LCD Size

LCD Panel

Resolution

Pixel pitch

Luminance

Contrast ratio

Viewing angle

Response time

Backlight

Touch Type

Touch Light Transmission

External I/O

USB Port

Audio Port

LAN Port

COM Port

HDMI

Antenna

DC input

Other

Wireless Communication

WLAN

Bluetooth

Mechanical & Environmental

Operating Temp.

Storage Temp.

Operating Humidity

Dimension (W x L x H)

Weight

IP Rating

VESA

Power Requirement

Power Mode

System Fan

Color

Construction

Packing List

Packing List

Ordering Information

Ordering Information

What is SID-21WR2?

Key Features & Benefits

Applications & Use Cases

Frequently Asked Questions