- Cal Spa Heater Relay
- Part # ELE09900910
- Used on Cal Spas from 1996-1999
- 240 Volt
- Made by Zettler # AZ2280-1C-240A
- Usually located mounted on Balboa Control Box, next to the heater terminals.
Note: Please check the part # on your Zettler Relay to be sure it matches AZ2280-1C-240A