There are various types of "control", therefore, there are various types of control equipment. There is birth control equipment, livestock control equipment, air pollution control equipment, etc.
SIC 3669 covers makers of traffic control equipment
Traffic control equipment manufacturing is covered by NAICS Code 334290
NAICS Code 334290 covers makers of traffic control equipment
why are series -parallel control circuits important in the circuitry used in air-conditioning equipment
That helps ensure that equipment by different manufacturers work well together.That helps ensure that equipment by different manufacturers work well together.That helps ensure that equipment by different manufacturers work well together.That helps ensure that equipment by different manufacturers work well together.
Environmental and structural condition monitoring and protection is the use of the control room in a substation.Specifically, a control room exists to make sure that the well-being of equipment, people and structures is realized. It may be the location for equipment which keeps a substation's ambient conditions -- such as air conditioning, heating, lighting, power -- respected. Its staff may have special expertise in maintaining the facility's security and structural integrity.
control everything
System software
Well you cannot get arrested for not knowing it nor is the lack harmful.
Computer-aided Manufacturing(CAM)
Yes they do. Most are standard equipment.