How to change the battery – SPA392 SeriesCreated OnMay 7, 2026Last Updated OnMay 7, 2026byAva Campbell You are here: Main Shower Panels 392M/392B/392H/392R/331B How to change the battery - SPA392 Series < All Topics How to change the battery: Locate the battery compartment at the bottom of the shower panel. Unscrew the cover. Insert the new battery. Replace and secure the cover.