Description Drop-in replacement PCB for Geyserwise controllers, upgraded with an ESP-based module running Please note that these devices are readily available, but are Flashed “On Demand” and will require and additional 2-3 Days to process and ship, and are therefore marked as Back Order items. ESPHome firmware.Integrates seamlessly with Home Assistant for local control, no cloud needed. Features:Pre-flashed with ESPHome – ready to useWorks with Home AssistantDirect replacement, no extra wiring
