A dwelling unit that is accessory to a permitted industrial use and occupied by a guard or caretaker under the employment of that industrial operation. A caretaker quarters must be no larger than six hundred (600) square feet in area and located within, or attached to, the principal structure of the industrial use which it serves. (Ord. 1030 § 2(12), 2018; Ord. 911 § 2, 2002)