Product Details6000-510 works for both 4 wire and 5 wire. The 4 wire setup does not use prong number 4 on the timer.
Sundance used Grasslin and Diehl interchangeably in this application.
Comes with five terminals. Do not use spare terminal (normally open position).
Cross Reference: ELEFM1120, 215397383, 9210-04A, FM-1, and FM/STUZ.
Spa covers, filter cartridges that are used or have been wet, spa equipment packs, heaters and any electrical items (including but not limited to: circuit boards, spa control panels, contactors, switches, sensors, speakers, transformers, pumps and motors) are a FINAL SALE. Manufacturer's warranty still applies and can be returned for warranty only. Maximum manufacturer's warranty on electronics is 6 months.