In der Konsole vom UI Timer2 {"Enable":0;}
ausgeführt macht genau das was ich möchte:
18:50:22.737 CMD: Timer2 {"Enable":0;}
18:50:22.747 MQT: stat/DVES_825880/RESULT = {"Timer2":{"Enable":0,"Mode":0,"Time":"12:00","Window":0,"Days":"1111111","Repeat":1,"Output":1,"Action":0}}