I also have a Zencar but this one, off Amazon looks nice and is available with a 6-50 plug
https://www.amazon.com/MUSTART-TRAVELMASTER-Intelligent-Identification-Auto-Adjusts/dp/B07TF8BGM4/ref=sr_1_7?keywords=level+2+ev+charger&qid=1581553592&s=automotive&sprefix=level+%2Cautomotive%2C288&sr=1-7
Here's another one that comes with a 6-50 plug but is not adjustable downward for use on anything less than a 40a circuit:
https://www.amazon.com/PRIMECOM-Electric-Vehicle-Charger-6-50P/dp/B07NQ71P2S/ref=sr_1_14_sspa?keywords=level+2+ev+charger&qid=1581554115&s=automotive&sprefix=level+%2Cautomotive%2C288&sr=1-14-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzTUVFVDdFVkVYRkFVJmVuY3J5cHRlZElkPUEwMTc0OTAwM1JKNUk2MjdLN05GNSZlbmNyeXB0ZWRBZElkPUEwNjI4OTg0WVRGQ1FLM0Q3N1RRJndpZGdldE5hbWU9c3BfbXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==