What are the key features of the SPC-21WR2 stainless-steel Panel PC?

The SPC-21WR2 is a 21.5" Full HD (1920x1080) stainless-steel fanless ARM panel PC with a Rockchip RK3568 quad-core Cortex-A55, 2GB DDR4, 32GB eMMC, 10-point PCAP touch, default 5-side IP65 (optional whole-system IP66/69K), USB 3.0, HDMI 1.4, Gigabit LAN, optional waterproof Wi-Fi/BT and M12 connectors, on Android 11 or Debian 11.

What makes the SPC-21WR2 suitable for washdown environments?

It has fully stainless-steel front and rear construction with a default 5-side IP65 rating and an optional whole-system IP66/IP69K rating — designed to withstand high-pressure, high-temperature washdown common in food and pharmaceutical production.

Which processor does the SPC-21WR2 use?

It uses the Rockchip RK3568, a quad-core ARM Cortex-A55 SoC (up to 2.0GHz) — an efficient, fanless platform well suited to hygienic HMI and signage.

What operating systems does the SPC-21WR2 support?

It runs Android 11 or Debian 11, suitable for kiosk/HMI apps and Linux-based industrial software.

What is the M12 connector option on the SPC-21WR2?

An optional M12-connector variant provides sealed RJ45, DC, USB, COM and a vent valve, ensuring ingress protection is maintained at the cabling interface for IP66/69K deployments.

What display does the SPC-21WR2 have?

A 21.5" Full HD (1920x1080) LED panel with a high 3000:1 contrast and projected-capacitive 10-point multi-touch — readable and responsive for hygienic operator interfaces.

What connectivity does the SPC-21WR2 provide?

2 x USB 3.0, HDMI 1.4 out, 1 x Gigabit Ethernet, a line-out headphone jack, and optional waterproof-antenna Wi-Fi with Bluetooth 5.0.

How is the SPC-21WR2 mounted and powered?

It supports wall, stand, and VESA 75x75mm mounting, with a wide +12~24V DC input (default) or +19~24V on the M12 model, and a 60W AC-DC screw-type adapter.

Is the SPC-21WR2 ruggedized?

Yes. It is vibration-tested to 1.5Grms (IEC 60068-2-64), shock-tested to 10Grms (IEC 60068-2-27), and drop-tested (ISTA 2A), in addition to its stainless-steel IP-rated construction.

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

With stainless-steel IP65/69K construction, fanless ARM compute, and washdown-ready sealing, the SPC-21WR2 targets food and beverage processing, pharmaceutical, clean-room, and wet or hygienic industrial HMI.

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

SPC-21WR2

Data Sheet

*Price on request. Contact us for a quote.

Manufacturer: Avalue

Highlights

21.5" Full HD (1920x1080) 3000:1-contrast PCAP 10-point multi-touch
Stainless-steel front & rear; default 5-side IP65 (opt. IP66/69K)
Rockchip RK3568 quad-core Cortex-A55 (up to 2.0GHz), fanless
2GB DDR4 onboard + 32GB eMMC onboard
Android 11 / Debian 11
USB 3.0, HDMI 1.4 out, Gigabit Ethernet
Optional waterproof Wi-Fi + Bluetooth 5.0
Optional M12-connector variant for sealed I/O
VESA 75 / wall / stand mount; wide +12~24V input

Product Description

The Avalue SPC-21WR2 is a 21.5" Full HD stainless-steel fanless ARM panel PC built for hygienic and washdown environments, powered by the Rockchip RK3568 quad-core Cortex-A55 processor.

With a fully stainless-steel front and rear construction and a default 5-side IP65 rating (optional whole-system IP66/69K), it is purpose-built for food, pharmaceutical, and wet industrial applications.

The 1920x1080 panel offers 250 cd/m² brightness, a high 3000:1 contrast, and 10-point projected-capacitive touch.

It runs Android 11 or Debian 11 on 2GB DDR4 and 32GB eMMC, with USB 3.0, HDMI 1.4 out, Gigabit Ethernet, optional waterproof Wi-Fi/Bluetooth, and an optional M12-connector variant for sealed cabling.

Validated vibration/shock/drop testing, VESA/wall/stand mounting, and a wide +12~24V input make the SPC-21WR2 a durable hygienic HMI for harsh, washdown-prone environments.

Technical Specifications

Processor

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

System Memory

2GB DDR4 on board

CPU Cooler (Type)

Fanless

Storage

32GB eMMC on board

DC Input

Default+12V~24V DC in

(+19V~24V for M12 model by option)

OS

Android 11 / Debian 11

Certification Information

CE, FCC Class B

LCD Size

21.5"

Display Type

FHD

Resolution

1920x1080

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

10 ms

Backlight

LED

Touch Type

Projective capacitive multi-touch up to 10 points

Touch Light Transmission

85%

Touch Controller

EETI

USB Port

2 x USB 3.0 Type A

Video Port

1 x HDMI 1.4 Out

Audio Port

1 x Headphone Jack for Line Out

LAN Port

1 x RJ45 10/100/1000 Lan port

Switch

1 x Power button (on side)

DC input

1 x DC Jack

1 x Reset

Other

Option for M12 connector:

1 x RJ45

1 x DC Jack

1 x USB

1 x COM

1 x Vent Vale

WLAN

Optional Wi-Fi with waterproof antenna

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)

541.6 x 348.6 x 47mm

Weight

8.2 kg

Vibration Test

With SSD/mSATA : 1.5Grms, IEC 60068-2-64, random, 5 ~ 500Hz, 30min/axis

Shock Test

With CF/SSD : 10Grms, IEC 60068-2-27, half sine, 11ms

Drop Test

ISTA 2A, IEC-60068-2-32 Test:Ed

IP Rating

Default 5-Sides IP65

Option for whole system IP66/69K

Mounting Kit

Wall / Stand / VESA 75 x 75mm

Power Mode

AT/ATX (ATX is default)

System Fan

Fanless

Construction - Front

Stainless steel

Construction - Rear

Stainless steel

Adapter

Input: 100 ~ 240Vac/ 50 ~ 60Hz

Output: 60W adapter (12V @ 5A adapter) AC-DC adapter screw type

For optional M12 model: 60W adapter (24V @ 2.5A adapter) AC-DC adapter plug type

(need waterproof M12/4pin-D2.5 DC Jack-plug 200cm cable for M12 DC in connector --> E170W060030R)

Ordering Information

SPC-21WR2-6803-A1R | 21.5" 1920 x 1080 IP-65 Stainless Steel panel PC/PCap/RK3568/2GR/32G eMMC/Android 11/LAN/2x2USB/HDMI/Line Out/Reset/DCin/Power Button/without Adapter/without M12

ACC-ARM-D1R | VESA STAND, 75mm & 100 mm

ACC-ARM-D23R | VESA STAND, 75mm & 100 mm

ACC-ADP-060N-08R | AC/DC adapter 12V/5A Screw Type

E1702031833R | USA Power Cord

E1702031000R | EU Power Cord

E1702031834R | Japan Power Cord

E1702031830R | UK Power Cord

E1702031831R | Australia Power Cord, ******************************************************************************************, For M12 model:

ACC-ADP-060N-09R | AC/DC adapter 24V/2.5A Plug Type, *(Suggest DC Jack to M12 cable E170W060030R (Waterproof M12 DC Cable) when adapter needed), * Same power cord option as ACC-ADP-060N-08R

E170W060030R | Waterproof M12 DC Cable

E170W160030R | Waterproof M12 USB Cable

E170W160040R | Waterproof M12 Lan Cable

E170W170010R | Waterproof M12 COM Cable

What is SPC-21WR2?

The SPC-21WR2 is a panel pc / monitor / mobile manufactured by Avalue, designed specifically for industrial-panel-pc applications. The Avalue SPC-21WR2 is a 21.5" Full HD stainless-steel fanless ARM panel PC built for hygienic and washdown environments, powered by the Rockchip RK3568 quad-core Cortex-A55 processor. With a fully stainless-steel front and rear construction and a default 5-side IP65 rating (optional whole-system IP66/69K), it is purpose-built for food, pharmaceutical, and wet industrial applications. The 1920x1080 panel offers 250 cd/m² brightness, a high 3000:1 contrast, and 10-point projected-capacitive touch. It runs Android 11 or Debian 11 on 2GB DDR4 and 32GB eMMC, with USB 3.0, HDMI 1.4 out, Gigabit Ethernet, optional waterproof Wi-Fi/Bluetooth, and an optional M12-connector variant for sealed cabling. Validated vibration/shock/drop testing, VESA/wall/stand mounting, and a wide +12~24V input make the SPC-21WR2 a durable hygienic HMI for harsh, washdown-prone environments.

Key Features & Benefits

21.5" Full HD (1920x1080) 3000:1-contrast PCAP 10-point multi-touch
Stainless-steel front & rear; default 5-side IP65 (opt. IP66/69K)
Rockchip RK3568 quad-core Cortex-A55 (up to 2.0GHz), fanless
2GB DDR4 onboard + 32GB eMMC onboard
Android 11 / Debian 11
USB 3.0, HDMI 1.4 out, Gigabit Ethernet
Optional waterproof Wi-Fi + Bluetooth 5.0
Optional M12-connector variant for sealed I/O
VESA 75 / wall / stand mount; wide +12~24V input

Applications & Use Cases

The SPC-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
Networked industrial systems and data communication
Interactive control interfaces and operator panels
Panel-mounted installations and control cabinets
Peripheral device connectivity and data transfer

Highlights

Product Description

Technical Specifications

System Information

Processor

System Memory

CPU Cooler (Type)

Storage

Storage

Power Requirement

DC Input

Software Support

OS

Certification

Certification Information

Panel

LCD Size

Display Type

Resolution

Pixel pitch

Luminance

Contrast ratio

Viewing angle

Response time

Backlight

Touch Type

Touch Light Transmission

Touch Controller

External I/O

USB Port

Video Port

Audio Port

LAN Port

Switch

DC input

Other

Wireless Communication

WLAN

Bluetooth

Mechanical & Environmental

Operating Temp.

Storage Temp.

Operating Humidity

Dimension (W x L x H)

Weight

Vibration Test

Shock Test

Drop Test

IP Rating

Mounting Kit

Power Mode

System Fan

Construction - Front

Construction - Rear

Component

Adapter

Ordering Information

Ordering Information

What is SPC-21WR2?

Key Features & Benefits

Applications & Use Cases

Frequently Asked Questions