Air Quality Monitor CO2 Detector Professional Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Monitor w/Audio Alarm Data Export (M2000 2nd)

I'd tried a few meters before this. They were all rubbish. This one actually seems to work correctly though. I can zero calibrate it outside, and see levels rise in poorly ventilated spaces within a few minutes as the device adjusts. And going outside and measuring it returns to basline levels. This alone is better than any of the other devices I've bought and gives me great peace of mind that it is actually likely to be detecting co2 accurately. if nothing else this device is precise and consistent. Great product, I'll be trusting Temtop from now on, they've won my approval with this product.

Pour l'instant, il fonctionne très bien et semble donner des résultats proches de la réalité lorsque je compare la pollution avec le site météo. En tout cas à ce qui a trait avec les fines particules. Il est très sensible, il y a une rôtie qui a brulé légèrement et j'ai obtenu plusieurs alarmes, CO2, fines et plus grosses particules étaient rendues très élevées. Aussi, excellente communication avec le vendeur.

Es justo lo que necesitaba, obtengo mediciones de CO2 en el laboratorio. El equipo crea un Excel diario y registra los valores cada 30 minutos, se conecta a la computadora y se extraen los archivos.

Como se utilizo para el trabajo, se lo dimos al personal y al utilizarlo no daba bien las lecturas, asi que optamos por primero enviarlo a calibrar con un proveedor, el cual concluyo que no se podia calibrar este medidor. Por temas de tiempos, ya paso el tiempo limite para hacer la devolucion, mas no lo recomiendo por no llegar calibrado, no se si asi lleguen todos o nos toco mala suerte, mas creo que la garantia deberia de ser de 1 año para cambiarlo, mas ya no me permiten.

Great customer service. At first I thought the device was defective, but it turned out I was using the power button incorrectly. The seller responded quickly, was very professional, and immediately offered help and a refund. I really appreciate their attention and support. The device works exactly as expected and matches the description provided. Thank you!