Product Overview

The Kramer RC-308 is a compact 8-button PoE control keypad for Kramer Control systems, designed for in-wall installation in conference rooms, classrooms, and commercial meeting spaces where a single LAN cable provides both power and communication. It fits standard US, EU, and UK 1-gang wall junction boxes, making it a cost-effective, aesthetically clean room control interface that integrates with lighting switches and other electrical hardware. AV integrators use the RC-308 as the primary end-user control interface for Kramer Control-based room automation systems programming button macros via K-Config for display control, source selection, lighting, shading, and volume from a single keypad. Its built-in RS-232, RS-485, IR, relay, and GPI/O ports also allow standalone room controller operation without a separate master processor.

Product Description

The RC-308 features 8 RGB-backlit buttons with custom-labeled, removable button caps giving integrators the flexibility to create polished, branded room control interfaces without visible blank keys. All 8 buttons are independently programmable via Kramer K-Config software, supporting complex multi-step macros for AV routing, display power, lighting scenes, and shading presets. Power over Ethernet (PoE) via the RJ-45 connector eliminates the need for a dedicated power supply at the wall, reducing installation time and material cost. A 12V DC power supply input is also available when PoE is not supported by the network switch. Two RS-232 ports on 3-pin terminal blocks allow direct serial control of displays, amplifiers, and processors. RS-485 and KNET connections extend control to additional devices and auxiliary keypads over a single cable. Two IR emitter outputs and a built-in IR learning sensor provide IR control of room devices. Two relay outputs handle contact closure for projection screens and motorized shading. One GPI/O port supports occupancy sensors and building automation integration. Multiple RC-308 units can be daisy-chained via KNET for multi-keypad installations with consistent appearance and operation.

Key Features

• 8 RGB-Backlit Buttons Individually programmable buttons with custom-labeled, removable caps for tailored room control interfaces.
• PoE-Powered Single-Cable Install One LAN cable delivers both power and network connectivity from a PoE switch, eliminating local power supplies.
• Kramer Control Native Support Designed as the end-user interface for Kramer Control AV room automation systems.
• 2 RS-232 Ports + RS-485 Direct serial control of displays, processors, and amplifiers; RS-485 for extended bus connections.
• KNET Connectivity Chains multiple keypads or connects to Kramer master controllers via a single KNET cable carrying power and communication.
• 2 IR Emitter Outputs + IR Receiver Controls IR devices in the space; built-in sensor learns commands from existing remotes.
• 2 Relay Outputs Contact closure for projection screens, motorized shading, and blinds (36V AC/DC, 2A).
• 1 GPI/O Port Configurable as digital input, digital output, or analog input for sensors and building automation.
• 1-Gang US/EU/UK Wall Box Fits standard 1-gang in-wall junction boxes in US, European, and UK formats.
• K-Config Software Programming All macros, EDID labels, and I/O logic programmed via Kramer K-Config.

Typical Applications

• Conference room and boardroom AV control interface
• University classroom and lecture hall AV management
• House of worship AV and lighting control keypad
• Government meeting room control interface
• Training room and multi-purpose room automation
• Commercial meeting space room control

Technical Specifications

Frequently Asked Questions

Can the RC-308 act as a standalone room controller without a Kramer master controller?

Yes. Using K-Config software, the RC-308 can be programmed as a standalone room controller, using its built-in RS-232, RS-485, IR, relay, and GPI/O ports to directly control room devices without a separate processor.

What is the difference between the RC-308 and RC-306?

The RC-308 has 8 buttons; the RC-306 has 6 buttons. Both share the same I/O port set, PoE support, mounting format, and K-Config programming. Choose based on the number of control functions required in the room.

Does the RC-308 require a PoE switch?

PoE is the recommended installation method but not required. The RC-308 also accepts a 12V DC power supply for environments without PoE switching infrastructure.

Can multiple RC-308 keypads be linked together?

Yes. Multiple RC-308 units can be daisy-chained via a single KNET cable, delivering both power and communication between keypads for multi-button installations across a room or space.

Is the RC-308 compatible with Kramer Control?

Yes. The RC-308 is natively supported by Kramer Control and is the standard end-user button interface for Kramer Control-based room automation systems.