Question about tado° Radiator thermostat

Hi zäme Does this kit also work with old electric heaters? Unfortunately I have no idea about heating... I can choose between "Direct", "Storage" and "Storage+Direct". Maybe this will help... The radiator looks like the ones I found on the internet. https://www.google.com/search?q=alte+electricheating&safe=strict&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwi3reS3567tAhUMDewKHSBaAXMQ_AUoAXoECBcQAw&biw=1760&bih=985#imgrc=_K-ib9XkcWn7TM Thanks for your help! :)