Systems and techniques are disclosed relating to wireless communications. The slipstream of liquid is then mixed upstream of an injection pump with a latex comprising a drag reducing polymer to produce a drag reducing mixture. The HDMI connector includes a connecting terminal having an extending cable terminal arranged in parallel in a main body. If the brightness and volume of the TV have been decreased in all of preset phases, and still no button signal is received, the DSP automatically shuts off the TV. The recipient classification display is updated in response to detecting a user selection, and an optional control is provided to specify the remaining unassigned recipients to one recipient status.