An air conditioner includes an air conditioner body and a remote controller that controls the operation of the air conditioner body. A valve unit is located in the female unit and includes a core with two flexible disks on two ends thereof. The method further includes determining a second start time and a second duration of the systolic waveform of the second cardiac cycle. The sensor is positioned between the first and second magnetic shields and is electrically connected in series between the first and second electrodes. The pump assembly is for drawing oil from the oil pan of the vehicle through the inlet port assembly when the pump assembly is actuated.