Voltmeter alarm case easy auto-lock

Hi!.

Looking for the tipical voltmeter alarma, I didn't find nothing usefull for me.
With this features.

- Strong
- Easy battery remplacement
- 360º Cover more or less
- No tools.
- Auto-lock and stand to prevent the disconnection with hits, jumps, fast moviments... (like mountainbike sports)
- possibility to click the button configuration easily

So I have created this. It is make to close it with 2 screw and it is ready to auto-stand in a 3-4.5mm diameters wires

You will need.