What I like:
The device works with me so far without errors. Simply hold your hand under the sensor and immediately get a matching portion soap from the dispenser.
There have recently been only 3 batteries required for operation. This benefits the environment and the wallet. Operation with rechargeable batteries I have not tested yet.
What I do not like:
The refills are too expensive.
The blister pack is too cumbersome to open. Here there is an acute danger of cuts.