Roller Shutter Indication

[wahrens]

Platform : Raspi 3
Version: Version: 2020.2 (build 12847)

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I use 3 different roller shutter modules and i don't understand the indication:
left: Fibaro roller shutter 3, middle: no name from china, right: Aeotec ZW141 Nano Shutter+



1. all show the right status - Closed

2. 2 sliders show open, 1 shows closed

3. If i change the device from "blinds percentage inverted" to "blinds percentage", the status show "Open" which is wrong but the slider is correct.