Hi,
there I provide a tool for helping with disassembly of ABB Welcome bell panels. It could be useful in case you own the bell panel of this type and lost the provided key, or you have to service that panel and do not have the key already. It's pretty similar to the original tool, that is being sold for almost 10€. In some cases, it may be easier for you to get it printed right away, although it is not as strong as the metal-plastic original.
Let me know if it helped you! Or feel free to contact me with ideas for improvement.
Have a nice day,
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D.
The author marked this model as their own original creation.