The attached file explains how to recognize types of Rema cables.
You can remove the heat shrink of the gun from the charger site and check the position of the communication cable inside the cable.
Resources
How to identify REMA cable version
Figure 1. Cable revision guide
Figure 2. Type A Brugg cable
Figure 3. Type B1 Brugg cable
Figure 3. Type B1 to B2 Brugg cable
Disclaimer Notice
By using Delta Electronics (Netherlands) B.V. and affiliates website and its technical information, you agree to be bound by the terms of this warranty disclaimer.