Temtop Air Quality Monitor Indoor Thermo-Hygrometer - PM2.5, AQI, Temperature, and Humidity Meter for Home, Office, or School, Air Quality Measurement, 60-Day Battery Life | AQI, Temperature & Humidity Monitor, Portable, 60-Day Battery Life, for Home, Office, Nursery & School

This air quality monitor is working perfectly fine. I have seen some comments saying that it is not stable but I have tested it in multiple scenarios and it is working perfectly fine. I have recently bought an air purifier. Before turning on the air purifier the AQI was around 85 in my room. After 10 minutes of running the air purifier at full speed the value dropped to 25. I also tried it in multiple places during multiple days and the values looked consistent. I think this is a genuine product. I am attaching a few images captured at different locations. The only problem I noticed is when we use it directly under the sunlight it is giving a lesser AQI value. I think they have also mentioned this point in their manual, saying that direct exposure to a light source can alter the values. That is the only issue I found with it but for internal use cases it is great and really content and the battery life is so good. I have been using it for almost one week and even a single bar has dropped on it. Just to clarify I have been only using it on and off for short durations to test the AQI. I haven't left it turned on but even with this I think the battery life is really good.

It’s a good air quality monitor but it updates in real time only when it is plugged-in. Though the battery lasts very long, the PM2.5 and AQI readings take a lot of time to update (more than a few minutes). Temperature updates in seconds even on battery. You have to keep it plugged-in if you want to see PM2.5 and AQI getting updated in seconds. Have compared with readings on air purifier and the readings are close, so appears to be accurate with 10% error as claimed.

It has been less than a month since the product was delivered, yet the device has already become defective. The AQI reading is permanently stuck at “1” and does not change at all, regardless of location or environment. Troubleshooting already done: To eliminate basic usage factors, I have: Turned the device on/off and allowed proper warm-up time Placed the monitor in multiple indoor and outdoor environments Fully charged the battery Ensured the inlet/outlet vents are not blocked and gently cleaned them Waited 15–20 minutes in each environment for readings to stabilize Despite all of this, the AQI value remains fixed at “1” and does not reflect actual air conditions, indicating a clear malfunction or sensor failure.

So far working fine. Reading looks accurate. Probably best option available in india

I’m not convinced it works. The Auto mode doesn’t do as expected. I have to switch between Eco and Auto to trigger the device to actively measure the values only for the values to remain static (like you’d expect on eco mode) until I switch from Auto to Eco and back to Auto. Too expensive for it does. The battery life is great. Seems well built and easy to carry but not happy with the way it displays the readings.

Been using it for last few months. Charging lasts about 1 month easily. Compact design with clear display. Just turn it on. That’s it. Pretty simple. Good built quality. I recommend it.

Really useful device, gives proper reading.

The product shows the AQI as described however the data is not real-time. The automatic mode is not usefull at all and manual mode refresh in half n hour.

I've had it for 6 months and it has mostly hovered around AQI of 1 or 2 occasionally up to 20 making me wonder if this thing is working. Then the wildfire smoke from Canada hit Ohio and air quality is all over the news. Today I can see the fog in the air and this shows AQI 75 inside where I always run air purifiers. I set it outside, AQI jumped within a couple minutes up to 265. Brought it back inside and jacked up the 3 purifiers from low to high, indoor AQI went down from 75 to 67. This is all very useful information for respiratory health.

It does seem to provide pretty accurate PM2.5 and air quality readings. At least, these jibed with the one-word weather descriptions of Accuweather, a weather forecasting service. But will still need to try it out more to ascertain if it’s really accurate over a spectrum of air quality conditions. As of the first series of readings though, it did well.

Estaba súper escéptico al comprar este producto por las reseñas que he visto. Algunas dicen que no le dura la batería. Otros que no es exacto. Otros que se traba y ya no mide más. Después de una semana de usarlo… la batería le ha durado impresionantemente mucho. Si lo considero sensible ya que sí marca diferencias cuando cambias de cuarto o cuando sales. Inclusive me lo he llevado a casas de amigos para medir en diferentes lugares y verdaderamente mide más contaminado en donde sí está más contaminado y también mide menos contaminado cuando ya tengo el purificador de aire prendido durante algún tiempo. Lo único que no me gusta tanto es que es más exacto cuando lo prendes y apagas porque. Vuelve a medir desde 0 pero bueno, al final mide y es lo que importa. Tiene un margen de error de más menos 5 y como dice en el instructivo: al final es un producto para medir en casa, no es profesional ni la herramienta más fina es para que te des una idea. Lo recomiendo ampliamente y le dejo las 5 estrellas para complementar tantos malos reviews con los que no estoy de acuerdo para nada. Update: Estoy aún más contento con el sensor porque me lo he estado llevando a diferentes lugares. Me lo traje a un lugar que es un bosque y el aire supuestamente está muy limpio y al llegar lo encendí y ciertamente lo marco limpio. Pero luego el vecino empezó a quemar basura y cosas (malamente) y al mirarlo subieron los niveles de 12 aqi a 140 aqi. Realmente funciona y sí reacciona en un rango de tiempo realmente rápido.

Stays charged great, love having it in the kitchen for measuring air quality.

No sirve.