https://shop.clearwaterspas.com/products/ml400-topside-control-panel-overlay-sold-separately
ML400 Topside (Overlay Sold Separately) **DISCONTINUED**
Replacement Topside 4 Button Control Panel Used with RHY04 and EL1000M3 circuit boards (SKU: 54393-02) in Rhythm series from 2004-2008. 6 pin connection....
topside overlaysold separatelydiscontinued
https://spapartsnet.com/overlay-no-temp-display-3-button-analog-topside-control-air-tecmark-command-center/
Overlay, No Temp Display, 3-Button, Analog Topside Control, Air, Tecmark, Command Center
Overlay, No Temp Display, 3-Button, Analog Topside Control, Air, Tecmark, Command Center