There are 3 condition types, used for different purposes – “One time”, “Repeatedly” and “On any change”.– “One time” – when the pre-set condition has been reached, the scene will be activated only one time. For the scene to be activated again, the “WHEN” condition needs to be repeated. If you additionally insert a time in the “Condition is valid” field, the scene will not start until the “WHEN” state has existed for at least this time.– “Repeatedly” –  The “WHEN” state is constantly queried every full minute. And all set “DO” actions are also queried every minute if the “WHEN” state is not changed.– “On any change” – This condition is mainly used for monitoring temperature or power consumption. When that condition type is chosen for the value of X, it will always activate the same scene when pre-set conditions are met.Example:(WHEN) Shelly EM detects more than 15W, (DO) Send notification.In this case, every time Shelly EM detects a power consumption of over 15 W ( > 15W ), a scene will be triggered and the device will send a notification to the app, hence the user.