Customer Reviews

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  • 24/09/2020

    Easy to use with UART. I combined mine with a TTGO T-Display to both display the current reading and record historical readings. Can be configured for 0-2000ppm, 0-5000ppm or 0-10000ppm range. Make sure to use version 1.5 of the datasheet - earlier versions lack some info.

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  • 18/11/2020

    ready to use ! I bought 2 parts for the 2nd time

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  • 20/08/2020

    I ordered from Japan. To be honest, I imagined it would be disappointing in response and delivery, but the exact opposite. I was very relieved by the customer service that sent me timely instructions and the delivery of the product arrived in about 10 days, which I was prepared to take about a month. Both of them exceeded my expectations and I think I was able to buy very good things. Until now, I've chosen Amazon, but I'm going to use Banggood as well!

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  • 14/12/2020

    But had to be calibrated first. In the beginning it was only house numbers, not serious measured values

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  • 05/02/2021

    all ok

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  • 17/01/2021

    All ok, it is used at at co2 traffic light, to show air quality.

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  • 13/01/2021

    All good!

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  • 11/01/2021

    very good

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  • 31/12/2020

    The MH-Z19B CO2 sensor works as expected. Delivered within 12 days to Germany

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  • 21/12/2020

    ok

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