Here is a Heat Transfer Spa Control Pack, manufactured by Balboa. It is designed to be used with many Plug and Play 120 Volt Spas.
Pre-Wired with 15AMP GFCI Cord End for 120V Operation
Designed Exclusively for Heat Jacket Application
Separate Heat Up/Down Buttons on Panel
Standby Mode
Operates:
Heat Jacket Pump - 120V, 1-Speed
Spa Light - 12V/120V
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Please Note: Topside Not Included.
Choice of Topsides:
AI #3-00-8023/MFG #53238
AI #3-00-8006/MFG #5654-01