Consumer Electronics Control (CEC) is an optional protocol used in HDMI systems that allows HDMI devices to pass control functions along to all devices within the system.  CEC was designed to operate at low speeds with minimal processing and memory overhead.

The following is a set of all the features offered with CEC.  Devices may use all or only some of these features, depending upon functionality.

• One Touch Play - A device may be played and become the active source by the press of a single button.
• System Standby - Enables devices to be set on standby by the press of a single button.
• Preset Transfer - A device's presets can be auto-configured to match those of the TV.
• One Touch Record - Allows recordings to be made by the press of a single button.
• Timer Programming - Any device can program a timer recording on a recording device.
• System Information - Allows devices to auto-configure their language and country settings.
• Deck Control - Allows a device to control and interrogate a playback device.
• Tuner Control - Allows a device to control the tuner of another device.
• Vendor Specific Commands - Allows vendor-defined commands to be used.
• OSD Display - Allows a device to display text using the on-screen display of the TV.
• Device Menu Control - Allows a device to control the menu of another device.
• Routing Control - Enables control of CEC Switches for streaming of a new source device.
• Remote Control Pass Through - Allows Remote Control commands to be passed along to other devices within the system.
• Device OSD Name Transfer - Devices may request the preferred OSD name of other devices within the system.