Whale Expanse PCB LIN Extension 782.128 AK1912

Original Whale Expanse LIN communication PCB 782.128 for selected onboard Expanse gas/electric water heaters.

• WHALE Original Replacement Part described as “Expanse Communication PCB”, item code AK1912, PCB part no. 782.128.
• Acts as the LIN / communication interface board between the Expanse main PCB and external controls in LIN‑equipped Expanse systems.
• Sold as a small extension/communication PCB for Whale Expanse water heaters commonly installed in caravans and motorhomes.