A smart control device for controlling a television (TV) set includes at least one sensing device and a processor. The sensing device is configured to detect whether a person is in front of the TV set, and generate a first control signal upon determining that at least one person is in front of the TV set, or generate a second control signal upon determining that no people are in front of the TV set. The processor obtains the control signal generated by the sensing device, and turns on the TV set when the control signal is the first control signal and if the TV set was turned off, or turns off the TV set after a first predetermined time period elapsed, when the control signal is the second control signal and if the TV set was turned on.