8-Button Programmable Wall Keypad with RS232, IR, Relay & PoE
KanexPro CR-KEY8U 8-button programmable wall keypad with RS232, RS485, IR, relay & PoE. Standalone Linux AV controller in US 1-Gang — no processor…
The KanexPro CR-KEY8U is a standalone 8-button programmable wall keypad designed to deliver multi-protocol AV room control from a compact US 1-Gang wall plate. Built on a Linux-based ARM Cortex-A7 platform with 256MB RAM, it provides RS232, RS485, IR, relay, and TCP/IP control without requiring a separate control processor or proprietary software — ideal for conference rooms, classrooms, and huddle spaces where single-gang mounting is preferred. Featuring 8 programmable buttons with LED status feedback, the CR-KEY8U integrates 4× RS232, 1× RS485, 2× IR output, 2× relay, and 2× configurable I/O ports. Powered via PoE or DC 5V with just 1.1W consumption, it supports TCP/IP, UDP, HTTP, and WebSocket protocols. The magnetic aluminum front panel is field-swappable in black or white. Programming is handled through EASYAccomplish software available for Windows, Mac, and iOS, with web GUI access for network configuration.
- 8 programmable buttons with LED light status feedback and customizable film labels
- 4-channel RS232 and 1-channel RS485 bidirectional serial ports with configurable baud rates (2400–115200 bps)
- 2-channel IR output ports supporting 20KHz–60KHz wideband infrared control
- 2-channel isolated low-voltage relay ports (2A 30VDC / 0.3A 125VAC) for lighting, screens, and curtain control
- 2-channel configurable I/O ports for digital signal input or 5V output (50mA max)
- 100Mbps Ethernet with PoE support — TCP/IP, UDP, HTTP, and WebSocket protocols
- Linux OS on ARM Cortex-A7 (1.2GHz, 256MB RAM/ROM) — standalone operation with no external processor required
- Magnetic aluminum front panel (black or white) — field-swappable; US 1-Gang wall box install
- Programmable via EASYAccomplish (Windows, Mac, iOS) with web GUI for network settings
Specifications| CPU | ARM Cortex-A7, 1.2GHz |
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| Operating System | Linux |
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| RAM | 256MB |
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| Flash Memory | 256MB |
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| ESD Protection | IEC 61000-4-2: ±8kV (air-gap) / ±4kV (contact) |
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| Programmable Buttons | 8 buttons with LED status feedback |
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| Programming Software | EASYAccomplish (Windows, Mac, iOS) |
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| COM 1/2/3/4 (RS232) | 4× 3-pin phoenix connector, bidirectional, 2400–115200 bps |
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| RS485 | 1× 3-pin phoenix connector, bidirectional, 2400–115200 bps |
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| IR Output | 2× 2-pin phoenix connector, 20KHz–60KHz carrier |
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| Relay | 2× 2-pin phoenix connector, normally open, 2A 30VDC / 0.3A 125VAC |
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| I/O | 2× 2-pin phoenix connector, configurable input (24V) / output (5V 50mA) |
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| Control (LAN/PoE) | 1× 10/100M Ethernet RJ45, PoE supported |
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| DC 5V | 1× 2-pin phoenix connector |
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| USB | 1× USB Type-C (system debug) |
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| Dimensions | 2.76″ × 4.49″ × 1.52″ (70 × 114 × 38.5mm) |
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| Weight | 0.49 lbs (222g) |
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| Housing | Front: Aluminum alloy; Rear: Metal enclosure |
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| Color | Front: Black/White (optional); Rear: Black |
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| Installation | US 1-Gang standard wall box |
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| Front Panel | Magnetic aluminum, field-swappable |
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| Power Supply | DC 5V/1A or PoE |
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| Power Consumption | 1.1W |
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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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| Certifications | CE, FCC, UKCA |
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| 1× | Programmable Control Keypad |
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| 5× | 3-pin 3.5mm Phoenix Connector (male) |
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Questions
- How many serial ports does it have?
- 4× RS-232 bidirectional + 1× RS-485 bus port. More serial than any competing wall keypad.
- What IR frequency range?
- 2× IR outputs supporting 20KHz–60KHz carrier frequency.
- Does it require a control processor?
- No. Works standalone with direct RS-232, IR, and relay control. Also pairs with CR-HOST6S/CR-HOST8R for complex rooms.
- Can it work with third-party controllers?
- Yes. 100M Ethernet with TCP/UDP supports any IP-based system.
- What wall boxes does it fit?
- UK, US, EU, and CN standard wall boxes — universal compatibility.
- PoE or DC?
- Both. PoE for single-cable install, or DC 5V/1A as alternative. Power consumption is 1.1W.
- Buttons not responding?
- Check power (PoE or DC), verify Ethernet connection, confirm button programming.
- How to program buttons?
- No-code setup — simple programming interface, no proprietary software required.
- Annual licensing?
- No. No recurring fees, no proprietary software.
- What relay capacity?
- 2× contact closure relay outputs.