| 摘要 |
A thermostat for controlling a heating, ventilating and air conditioning (HVAC) system based an audible warning signal is provided. The thermostat comprises a microphone and an electronic circuit. The microphone senses the audible warning signal and generates an electrical signal corresponding to the audible warning signal. The electronic circuit is operably coupled to the microphone. The electronic circuit instructs the HVAC system according to the electrical signal. As such, the HVAC system is controlled based upon the audible warning signal.
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