7. The thermostat of claim 1 , wherein the thermostat has a plurality of features that can be disabled or enabled by the user, and wherein the control module is configured to automatically activate one or more natural language audio and/or one or more video clips in response to the enablement by the user of a feature of the plurality of features.
1. A thermostat configured to control one or more HVAC components of an HVAC system, the thermostat comprising: a housing, the housing configured to house: a control module configured to provide one or more control signals to control one or more HVAC components of an HVAC system in accordance with a thermostat control algorithm; a microphone; a speaker; a display; a voice recognition module, wherein the voice recognition module is configured to receive via the microphone a first distinct voice stream that includes a predetermined audible trigger followed by a help phrase, and to recognize the predetermined audible trigger and the help phrase in the first distinct voice stream; and wherein the control module is further configured to execute a help command that corresponds to the help phrase by entering a voice control mode and automatically providing one or more natural language audio clips via the speaker and/or one or more video clips via the display for assisting a user in operating the thermostat in response to the voice recognition module recognizing the predetermined audible trigger and the help phrase in the first distinct voice stream.