The part number TA4079 refers to a generic, electromechanical 24-hour spa timer manufactured by Diehl Controls (also distributed under the Borg General Controls brand).
This component is widely used in various hot tub control panels.
Specific hot tub manufacturers identified as using or having used this timer in their systems include:
Cal Spas: This brand is specifically linked to the use of the Diehl TA4079 timer.
Marquis Spas: Marquis Spas models have also utilized this component in their control systems.
Leisure Bay: This brand often incorporated the Pentair Rainbow filtration systems, which sometimes used compatible timer models like the TA4079 or alternatives from Intermatic/Grasslin.
Many Generic/Private Label Spas: Due to its widespread availability as a standard electrical component, the TA4079 timer has been installed in countless generic, plastic-shell, or private-label hot tubs that used standard 120V control packs.
