RC−74DL是一款带数字音量调整旋钮和LCD显示的多媒体房间控制器。通过以太网连接到Site−CTRL™，远程控制AV，现场管理及监控系统。为更多的控制设备，它也可连接局域网网关，通过KNET远程按键控制连接到主房间控制器和辅助键盘。它既可以做为一个独立的控制器进行工作，也可以做为房间综合控制系统中的一部分。RC−74DL是礼堂、会议室的理想选择，它更便于控制复杂的多媒体系统和房间元素如屏幕、灯光和幕布。

• 背光和标签功能按键 — 12RGB，触觉反馈，背光按键。按键分3组，每组均带LCD显示。
• 自定义标签，可移动按键盖。
• 带LED的音量控制旋钮 — 双向旋转数字旋钮，5个LED条。
• LCD显示 — 3个蓝色和8个白字LCD显示，分3组，用于程序可视反馈指示和配置标签。
• 2个K–NET接头 — 连接到主房间控制器，辅助键盘用于远程键盘控制。
• K–NET™单链路连接 — Provides a single keypad link cable–connectivity, carrying both power and keypad control communication information.
• 1 RS–485 Bi–directional Control Port — Control devices via RS–485 control protocols.
• 3 RS–232 Bi–directional Control Ports — Control a device via bi–directional serial control protocols.
• 2 IR Emitter Control Ports — Control a device via IR control protocols.
• 2 GPI/O Control Ports — Control a device via general purpose I/O ports, program–configured as digital input, digital output or analog input interface for controlling sensors, door–locks, audio volume and light dimming level, or lighting control devices.
• 4 Relay Control Ports — Control a device via relay contact closure, such as scrolling up and down screens, drapes, shades, and blinds.
• IR Sensor Port — Learns commands from IR remotes.
• Program Control — Program configuration with Kramer K–Config software.
• Kramer Site–CTRL™ Compatibility — For network management and remote control over the Ethernet port.
• Keypad Lock–Out — Option for tampering prevention by locking and unlocking of the keypad buttons.
• Mini USB Port — For uploading configuration files, setting the K–NET™ ID number, and powering the device during configuration.
• Mounting — In–wall, in standard 3 gang US wall junction boxes.
• Easy Installation — Fits to standard in–wall boxes for simple and cost–reducing installation.