Hyundai (made by Yura)  EVSE "Granny Charger"

This is the charger supplied with my Hyundai Kona EV. I got curious and decided to crack it open.

Observations :

It uses two relays, one for live and one for neutral. The relay coils have individual drivers, from individual pins on the main MCU, presumably for safety redundancy.

The 13A UK mains plug has a NTC temperature sensor, measuring 3.3K at room temperature. Below about 200R, the plug icon turns red and it cuts off the pilot signal to stop the car charging, but surprisingly it does not turn off the mains relays or show a more explicit fault indication. If the sensor is open, it flashes the socket icon but does not inhibit charging.

The RCD trips at 15mA AC. It does not detect DC leakage faults.

It does not appear to do mains undervoltage detection - it did not drop out until the mains voltage dropped below 50V.
It cannot detect a missing earth.

On the underside of the PCB, there appears to be an option to fit an optocoupler and resistor - I think this is for earth-disconnect  detection.

There is a UART header - all this appears to show is the following at power-up

V1.21A_H10_10A
[10A] [8A] [6A] Initial current [10A]

Case is pretty well glued together - clearly not designed to be repairable. Perhaps partly to deter people from changing /extending the cable.