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.

　　应用

　　系统的多媒体教室，会议室