roman87braun2 years ago000Is this about the MTS200HK or MTS200BHK version? -> According to the manufacturer, there is no pure MTS200 version.Show in original language (German)chjeizi2 years ago • purchased this product000purchased this product...I recently ordered here - I got the HK version with 16A relay. Because the internal power supply and the relay supply are on the same terminal, the thermostat cannot be used to switch potential-free (so it is only suitable for 220V systems)...Show in original language (German)Comment