PCB 130846 for Vaillant VK and VKC /8/9 gas boiler exclusive and classic : Amazon.nl: DIY & Tools
EZ Deluxe Tankless Water Heater - 3.4 GPM - Propane (LPG) Gas - Indoor Whole Home - Digital Display - FREE DIRECT VENT EXHAUST INCLUDED - Water Heater Parts - Amazon.com