I use it with neutral, super part! @Digitec, the picture is still not quite correct, the dimmer 2 has a total of 7 connections, so works for 2 buttons (in the picture 5 - 01.09.2020).
Pro
Can be used completely without cloud
Super for Smarthome retrofitting
Small, fits almost always behind switches
Can be operated without neutral conductor (from 10 W)
Contra
Sorry Digitec, but goes cheaper :P
dimming of LED's only from 10Watt total power!
Can lead to problems when operating without neutral (Google: ripple control signal)