The TCM-3 works together with the Lexicon 700t touchscreen controller to form a powerful and reliable media automation system. The TCM-3 acts as a "behind the scenes" control processor which executes commands and macros in response to trigger codes transmitted by a 700t. The TCM-3 has a built-in UHF receiver which allows it to respond to radio frequency, as well as, infrared trigger codes. Because it is directly hard-wired to the equipment being controlled (using standard infrared repeating devices), the TCM-3 provides a much higher level of reliability than a stand-alone infrared controller. Other features include three relays, two power sensor inputs, and an expansion port for additional control options.