This heater is a replacement part for the original heater in your Legend Series Master Spas models 1996 through 2001.Easily installable so you can get back to enjoying your heated Swim spa and hot tub in no time at all.
The Spa Dragon is a patented monitoring system with thermal backup protection that prevents freeze damage caused by equipment failure. Stay worry-free in winter, with real-time alerts and automatic heating activation—no matter where you are.
Spas and hot tubs that operate with a failing circuit board put the whole works (and your safety) at risk. We can help bring back the enjoyment of your spa — order this MS501S circuit board replacement and receive free shipping to all addresses in the "Lower 48".