Visited on May 19 and did a short charge with Swisscharge RFID.
The charger is easy to spot from the main road.
However I was confused by the way you're supposed to access the charger. When arriving from the west, the first opening has forbidden entry signs. You need to drive further for the entrance. There's a one-way road going behind the building which you are supposed to use.
Given there are no EV signs at that point and there is a ban sign and opening hours for the back area, I thought you were supposed to drive in front of the building through the firefighter's area. But you actually end up the wrong way in the second part of the parking if you go that way. I ended up facing the post bus because that's also the entrance to their depot.
On the screen of the charger there's a QR code to https://www.energiestadt-turbenthal.ch/projekte/schnellladestation-live-daten where you can see statistics about the solar production and charger usage.