switchbox with included electric Meter

Here is an switch box to use as power supply for your 3D-Printer. if you like you can install an electric meter like this one:

https://www.amazon.de/ELEGIANT-Wechselstromz%C3%A4hler-Stromz%C3%A4hler-Voltmeter-Amperemeter/dp/B01MZ93WXH/ref=sr_1_15?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=stromz%C3%A4hler&qid=1558029098&s=gateway&sr=8-15