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The sensors are quite sensitive. Good product! :) A worldwide multilingual instruction manual is included.
good co2 meter
Thanks works well
it's ok!
great instrument. Very accurate
it took a month
Very good
Ordered 11/02/2021, received 22/02/2021. At the opening, the detector had no screen protection, however, it was clean and without scratches. The charging cable was not attached, but the plastic fastener was present. Is it a return that has been revised, repaired? For the moment, it is working properly.
It is so convenient that we can recognize the timing for ventilating air in the crowded room by use of this machine.
I recieved the carbon detector on 22th December 2020 . Product ID 1742340, Order NO. 93637782. It was working until January 5th 2021. Now it stayes all the time by 400 ppm. I would like to return the item and to have it replaced to one which is working. Thank you. Kindly Angelika Kornfeld angiekornfeld@yahoo.de