A monitor device for an ostomy system comprising an ostomy appliance with a base plate, the monitor device comprising: a processor configured to apply a processing scheme; memory; a first interface connected to the processor and the memory, the first interface configured for collecting ostomy data from the base plate coupled to the first interface, the ostomy data comprising first ostomy data from a first electrode pair of the base plate, second ostomy data from a second electrode pair of the base plate, and third ostomy data from a third electrode pair of the base plate; and a second interface connected to the processor, wherein to apply a processing scheme comprises: - obtain first parameter data based on the first ostomy data; - obtain second parameter data based on the second ostomy data; - obtain third parameter data based on the third ostomy data; and - determine an operating state indicative of the dynamic internal state of the base plate of the ostomy appliance based on the first parameter data, the second parameter data and the third parameter data, wherein the monitor device is configured to, in accordance with a determination that the operating state is a first operating state, transmit a first monitor signal comprising monitor data indicative of the first operating state of the base plate via the second interface; and in accordance with a determination that the operating state is a second operating state, transmit a second monitor signal comprising monitor data indicative of the second operating state of the base plate via the second interface. a processor configured to apply a processing scheme; memory; a first interface connected to the processor and the memory, the first interface configured for collecting ostomy data from the base plate coupled to the first interface, the ostomy data comprising first ostomy data from a first electrode pair of the base plate, second ostomy data from a second electrode pair of the base plate, and third ostomy data from a third electrode pair of the base plate; and a second interface connected to the processor, wherein to apply a processing scheme comprises: - obtain first parameter data based on the first ostomy data; - obtain second parameter data based on the second ostomy data; - obtain third parameter data based on the third ostomy data; and - determine an operating state indicative of the dynamic internal state of the base plate of the ostomy appliance based on the first parameter data, the second parameter data and the third parameter data, - obtain first parameter data based on the first ostomy data; - obtain second parameter data based on the second ostomy data; - obtain third parameter data based on the third ostomy data; and - determine an operating state indicative of the dynamic internal state of the base plate of the ostomy appliance based on the first parameter data, the second parameter data and the third parameter data, wherein the monitor device is configured to, in accordance with a determination that the operating state is a first operating state, transmit a first monitor signal comprising monitor data indicative of the first operating state of the base plate via the second interface; and in accordance with a determination that the operating state is a second operating state, transmit a second monitor signal comprising monitor data indicative of the second operating state of the base plate via the second interface.