VAILLANT calormatic VRC 430 room temperature controller, operation: 24V, NEW officially UNused in original packaging : Amazon.nl: DIY & Tools
VAILLANT Control Interface VRC 630 W Weather-Guided Room Temperature Controller with Manual as PDF (English language not guaranteed), Officially : Amazon.de: DIY & Tools
VAILLANT Control Interface VRC 630 W Weather-Guided Room Temperature Controller with Manual as PDF (English language not guaranteed), Officially : Amazon.de: DIY & Tools