Here is one driver I found made for that device: [RELEASE]Minoston Power Switch - #15 by Kenneth
The post I linked to, a user updated the driver to fix some errors and posted it.
Here is my Zooz / universal driver. It has been tested on a MP31ZP but not the 21ZP yet. [DRIVER] Zooz Smart Plugs Advanced (ZEN04 / ZEN05 / ZEN14 / ZEN15)
