Beware of Defective, Wrongly Manufactured IR Thermometers

There is a lot of demand for medical supplies and equipment due to COVID-19. IR Thermometers are used to check the temperature of people before entering a building for instance and are also in short supply.

So factories are frantically mass-producing everything they can from face masks to IR thermometers, and it looks like some may forgo quality control.  The latter are very hard to find in Thailand, but one person managed to purchase an IR thermometer online and decided to open it…

[Update April 16th 2020: The Facebook video has been taken down, but still available on Youtube]

This Heaco MDI908 medical thermometer’s infrared board is not connected to the mainboard, so it “works” even without the IR sensor… This takes “non-contact infrared thermometer” to a whole new level 🙂

Defective IR Thermometer

I can see Kaidee (Thailand’s eBay) had some listed a few days, but the pages have since then been taken down. What I believe to be the company’s website (heaco dot ua) appears to have been taken down too. [Update April 16th 2020: The website is accessible again, and the company has been around for several years, so it appears to be a fake product using Heaco brand.  A comment on YouTube reads:

For sure it’s fake. Heaco haven’t any devices with 308 part number. And «Aiana3oH Temnepatypn tina” sign on the box – this is typical chinese transliteration from ukrainian “Діапазон температури тіла» with mean “body temperature range” 🙂


In any case, if you recently purchased IR thermometers from unknown brands you may want to double-check they work properly. It’s always possible they forgot to solder that one, but since many factories are repurposed for a completely different type of product, the manufacturers may just not know what they are doing. Stay safe!

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