On the PRCD-S+, the second button for resetting has been "saved".
This model can only be reset in real operation by unplugging it from the socket.
To test the PRCD-S+ with the SECUTEST, a socket strip with switch can be connected between SECUTEST and PRCD-S+, for example.
If the PRCD-S+ falls into fault condition, it can be de-energized by means of the switch (for 1 second), whereby the PRCD-S resets.
The test can then be terminated as usual.