MAX31855 Thermocouple Sensor Modules

Keep an eye out for fake MAX31855 thermocouple sensor modules!

A real looking module. Spoiler alert: it isn't.

Unfortunately, as pointed out on this forum post, there are plenty of fakes on the market. Look out for the following marksings on the chip:


The modules have different white logos on them, depending on the distributer. From AliExpress - CJMCU, and from eBay - QiFEi.

They absolutely don't work, and only produce junk values. Hopefully you read this in time to throw them away and buy new ones before you lose your mind in frustration.