This unit is by far the most capable that I have tried. I have installed it to replace the unit which was installed in a UK government discount scheme (and failed).
It has all the features that I could think of, including screen monitoring of the charge, settings through on-screen, wifi app and even jumpers and card switching, and a generously long charger cable.
As you can see in the picture I am using this S311 unit alongside an S310 to charge two cars overnight.
The product support is superlative (through WhatsApp) - their team is courteous, very knowledgeable, and go out of their way to make sure that my unit is set-up and functioning as I would like.
I recommend both of these units above any other in the market, even before considering the great price. Go with the S310 if you want a straightforward unit and plan to control the schedule through switching power, or simply charge whenever the car is plugged in. Choose the S311 if you want more control at the unit and have contiuous power going in.

The cable is long enough, which is very convenient for charging at home, and it has an app for control, which I really like.

Because many other brands do not have a display screen and current setting function, and they cost $400 and above, this is the only one with better quality and priced under $350. It is worth investing in this wall-mounted charging box for electric vehicles

The charging performance is excellent, and I really like the app's ability to schedule charging. It's good value for money.

Dies ist bereits mein zweiter S311. Ich habe ihn meinem Nachbarn empfohlen. Das Kabel ist lang genug, die Qualität gut und er verfügt über eine APP-Steuerung. Ich kann ihn nur empfehlen.