4" Capacitive Touchscreen AV Control Panel with PoE & Android 11
KanexPro CR-TOUCH4A 4-inch capacitive touchscreen AV control panel with Android 11, PoE, RS232 & Gigabit Ethernet. Programmable wall-mount room controller.
The KanexPro CR-TOUCH4A is a 4-inch capacitive touchscreen control panel running Android 11, designed to replace traditional button keypads and expensive proprietary touch controllers in conference rooms, classrooms, and smart office environments. Powered by an ARM Cortex-A55 processor with 4GB DDR4 RAM and 32GB eMMC storage, it delivers a fully customizable graphical interface for AV device control via TCP/IP, HTTP, UDP, WebSocket, and RS232 — all from a standard 86 wall box. The CR-TOUCH4A operates in dual mode: as a standalone touch screen central controller or as a user terminal connected to a host system. Its 720×720 high-resolution display provides intuitive touch-based room control for source switching, volume adjustment, lighting scenes, and display power. Gigabit Ethernet with PoE support enables single-cable installation, while the built-in RS232 port handles legacy serial device control. Programming is handled through EASYAccomplish software available for Windows, Mac, and iOS, with web GUI access for network configuration. For US installations, a surface-mount 86 box adapter or retrofit plate would be needed since US standard gang boxes have different screw spacing.
- 4-inch 720×720 capacitive touchscreen with customizable graphical interface
- Android 11 on ARM Cortex-A55 (1.8GHz) with 4GB DDR4 RAM and 32GB eMMC storage
- Dual-mode operation: standalone touch screen central controller or host-connected user terminal
- 1-channel RS232 serial port (3-pin phoenix) with configurable baud rate (2400–115200 bps)
- Gigabit Ethernet (10/100/1000M) with PoE support — single-cable installation
- TCP/IP, HTTP, UDP, and WebSocket network protocols for IP-based device control
- Password-protected host system management web page access
- Standard 86 box wall-mount design with aluminum alloy frame (Apple Gray)
- Programmable via EASYAccomplish (Windows, Mac, iOS) with web GUI for network settings
Specifications| CPU | ARM Cortex-A55, 1.8GHz |
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| Operating System | Android 11 |
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| RAM | 4GB DDR4 |
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| Flash Memory | 32GB eMMC |
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| Display Resolution | 720×720 (1:1) |
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| Touch Type | Capacitive touchscreen |
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| ESD Protection | IEC 61000-4-2: ±8kV air / ±4kV contact |
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| RS232 | 1× 3-pin phoenix, 2400–115200 bps |
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| LAN/PoE | 1× 10/100/1000M Ethernet RJ45, PoE |
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| Power | 1× 2-pin phoenix, 24V DC |
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| Debug | 1× Micro USB |
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| Dimensions | 3.39″ × 3.39″ × 1.73″ (86 × 86 × 44mm) |
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| Weight | 0.42 lbs (192g) |
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| Housing | Front: Touch screen; Frame: Aluminum alloy; Rear: Plastic |
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| Color | Front: Black; Frame: Apple Gray; Rear: White |
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| Installation | Standard 86 box (UK/CN). For US installations, a surface-mount 86 box adapter or retrofit plate would be needed since US |
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| Power Supply | 24V DC/1A or PoE |
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| Power Consumption | 5W |
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| Operating Temperature | 32°F–104°F (0°C–40°C) |
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| Operating Humidity | 20%–80% RH, non-condensing |
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| Storage Temperature | -4°F–140°F (-20°C–60°C) |
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| Storage Humidity | 10%–90% RH, non-condensing |
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| 1× | Programmable Touch Panel |
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| 1× | 3-pin 3.81mm Phoenix Connector (male) |
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| 1× | 24V/1A Power Supply (2-pin phoenix) |
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| 1× | Wall Mounting Bracket |
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| 2× | Bracket Fixing Screws |
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| 1× | User Manual |
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Questions
- What is the screen resolution?
- 720x720 capacitive touchscreen in a 4-inch form factor.
- What serial protocol is supported?
- RS-232 with configurable baud rates via the 3-pin Phoenix connector.
- Does it work with third-party controllers?
- Yes. Gigabit Ethernet with TCP/UDP/HTTP(s)/WebSocket supports any IP-based control system.
- Can I display a camera feed on the panel?
- Yes. Built-in RTSP/RTMP/HTTP streaming lets you display IP camera feeds directly on the 720x720 screen.
- Can it be powered by PoE only?
- Yes. One Cat5e/Cat6 cable provides both Gigabit data and PoE power. DC 24V is an alternative.
- Is the aluminum frame standard?
- Yes. Premium aluminum frame ships standard on the CR-TOUCH4A model.
- Screen not responding to touch?
- Check power (PoE or DC 24V), verify Ethernet connection, try power cycling via the power button.
- How to update firmware?
- Connect Micro USB to a computer and use the firmware update tool.
- What wall box does it fit?
- Standard 86 box (UK/CN). Uses included wall mounting bracket with 2 screws.
- Is there an annual licensing fee?
- No. No recurring fees, no proprietary programming software, no certifications required.