PZEM-017 universal mount (/w DIN) and shunt mount

I need power 48v box for connect more batteries and also need messure current and voltage. With PZEM-017 i can do this but how i can install sensor device on power distribution box?!
I just made holder for device and 300A shunt with respect to support isolation from main power box (i have metal box).

Model for holding measuring device, tightly insertion to holes in base, so it's holding very well. Pins have expanding form.
Use glue if you want for sure, i do not want to make frame. (i'm lazyyy)

Thanks for community, and @MightyMad too, i adapted holes fo use with PZEM-017 mount device. 
You can directly screw PZEM to box or screw with this model. 
I also attached this model in download section.

---CAUTION---
Remember about electricity safety (safety first) and all voltage > 36v AC\DC (in most cases) are dangereus! Also current more that 5A too.
I give you a small notice about DC current too hard to break, and big current have a tendency for heating, what can melt isolation, so use good source material for mount shunt (or use addidtional ceramic insulation part what you can buy in any electro shop)
You must have experience and understanding what you do and how you doing something.
I do not give any waaranty and bear any responsibility about what happens when you use my design for this device if you get problems in result.