I noticed that SAWF-07P only triggers the scene when the programmed trigger threshold is exceeded. I have a scene running that closes the window when the PM2.5 > 36 threshold is exceeded. If the PM value is exceeded and the window is opened later, the scene will never fire. The sensor has become useless unless I take multiple scenes. For each PM2.5 scene, a higher window closing threshold will work. Can this be improved?
Probably…
In HA, using two devices usually requires two scenes.
(Assuming that can be done also in eWelink)?
Scene 1:
Trigger: PM2.5 > 36
AND: window is open.
Action: Close Window
Scene 2:
Trigger: window being opened.
AND: PM2.5 > 36
Action: Close Window
Add a delay in the second scene 2 Close window, to allow the person to walk away, thinking they’ve opened the window. Only to have it close again.
If PM2.5 is e.g. 45, after opening the window, the window will not close. Now in Ewelink there must be many scenes of crossing the next PM threshold for one of them to close the window. I don’t know if it’s a sensor issue or the way the scene works.
Correct. It won’t close with only the one scene.
That is the reason for having the second scene.
In the second scene:-
TRIGGER: is the Window Opening detection.
AND: PM2.5 > 36 (so if its = 45 then PM2.5 > 36 = TRUE)
ACTION: Window Close
So the window close mechanism will activate. It will need a time delay, to allow the person opening the window to let go, before the mechanism operates to close it again……
The window opens according to the time schedule. The purpose of this scene is to close the window. Air PM2.5 =45. Trigger set to >36. The window will open according to schedule. The window closing scene does not start. PM2.5 air change from 35 to 36. The window closing scene begins. I’m inclined to believe this is a sensor software problem.
The sensor is in the room and the air outside the window is changing. When the window is opened, the measurement takes place (the sensor is placed next to it). The time schedule opens the window every hour, but if the air is not suitable, it should close immediately. Is it possible that the creators did not foresee such an application?
I achieved the goal by using multiple scenes (10 scenes exceeding the specified PM2.5). It may not be elegant, but it works.