Air Quality Monitor Gen 2, Air Quality Monitor Indoor Detects PM2.5, CO2, PM10, Noise, Temperature and Humidity, New Upgraded Alarm Clock Function, Air Quality Tester for Bedroom, Smart Home

First, I wanted to address most of the negative comments here regarding the screen no longer functioning or the backlight is dim. This device comes with a usb-c to usb-c cable and no charging adapter. USB-c is generally higher voltage. This device uses 5v 1a. So what I suspect is happening is that the device overheats because of the extra voltage used in usb-c adapters. Also, although the device manual indicates that you can leave it plugged in all the time, it probably does not have battery bypass. The work around is to use a smart plug and charge the device intermittently. I do this for old phones to display weather, etc. by creating a routine that turns the device on and waits then off and wait again. Lithium batteries can be charged many times but it's best to keep the battery level between 20-80%. The byproduct of constant charging is heat which will damage the battery. So those things should help the longevity of this device. The internal fan will also fail if the voltage is too high. With regard to accuracy and reviews showing 2 devices side by side with different values to imply this device is inaccurate. 1) you can offset the values to match any meter you perceive as being more accurate. 2) unless the device is in a controlled environment with a pre-measured amount of particulate, you will never get an identical number-why would you when you cannot account for the accuracy of the test environment? This is why temp and humidity are seemingly more accurate. That being said this device is very reactive and accurate. I have 2 analog hygrometers, 2 fans with controllers that have hygrometers, an Amazon air quality meter, and the thermostat on the wall. I have calibrated the analog meter by using salt like wet sand in a dish in a sealed bag. The meter is accurate when it's at 75% where evaporation is equal to absorption. This meter is right on the money and the same is true with temperature. So unless you're willing to spend about $15k for a "real" commercial certified air quality meter, this is about as good as it gets with some cool other features as well. The app works well on iPhone and I was even able to install a windows 10 version. Installing the sensor is simple. Research how to calibrate PM2.5 and other values before you decide about accuracy. I would recommend this device as it is reasonably priced and works very well. Amazon had a $24 coupon so I decided to get it and I’m glad I did. Update: Customer service is exceptional. They read my review and reached out and said the sensor causes heat (you can turn off the sensor in settings) and that the battery stops charging at 100%. However, in my opinion, it’s still receiving a trickle charge and you have constant charging while discharging. I would recommend a removable battery (they could charge extra for the optional battery) or a switch to stop charging. Also, i would recommend enclosing a charger and usb-A to usb-C cable and a warning not to use a quick charger or over 5v 1A because nobody pays attention to the input voltage even though the photos have a picture of the specifications.

Easy to use and very helpful.

This is pretty much a perfect desk air quality sensor. It looks great, has a user interface polished and easier to use than many smart devices or screens, and you can easily customize the sensors on the device itself. That alone is already perfect but it actually also comes with a great companion mobile app. As sometimes the alerts on the device got annoying for me for things like CO2 which I can't solve immediately, I've turned off the alert sounds on the device and use the app for alerts instead (yes you can get alerts for your device's air quality location through your mobile app anywhere you are). My main gripe is I don't necessarily like to keep battery powered devices always on, so I like to turn the power off and turn the power switch itself off. However the device seems to be very sensitive to when I pull cables out, and often times I come back in the morning to find that the device turned itself on and ran out of battery. I now turn it off without removing the plug or turning the power socket off, but I worry about its affect on the device's battery life. I've not tested having the device run on battery often aside from when it occasionally turns itself on by accident, but since it doesn't last overnight it doesn't seem like it's that long, and you would only really use it portable by turning it on when you need it and off when you don't.

This particular monitor has adequate plastic casing! It was very difficult to set up. The manual did not have enough detail. The battery did not hold a charge. The app and the monitor would not connect. The display is very small. I would not suggest it to anyone. It cost too much

+ What I like best: 1. It measures accurately a lot of environment parameters including PM2.5, PM10 (dust), carbon dioxide (to know if room is ventilated well), temperature, humidity, noise and tVOC (volatile organic compounds); 2. In case some parameters are not correct, you can easily calibrate manually or automatically; 3. It gives you options to adjust manually all the parameters in case a certain parameters drift after a long time of using; 4. It shows you all parameters in one screen so it is very convenient! 5. You can also check the app if you are not close to the monitor; 6. It has built-in battery which lasts 4-5 hours so you can bring along to check outside environment. + What I dislike: The battery doesn't last long enough so you need to charge it on time; I hope the battery can be replaceable in the next generation

This has been a great and reliable product. It has shown me that the bedroom I sleep in gets very high CO2 levels at night. Since realizing this I corrected the issue and wake up a little more refreshed and less stuffy feeling. Info with it was compatible with more smart home products and for that reason I will no purchase another one 8-month update: After moving the device to my nightstand, I discovered a major issue. While charging, it produces a very noticeable coil whine. The noise is loud enough to make it nearly impossible to sleep until charging finishes. We experienced a power outage for a few hours, and when power was restored late at night, the noise was unbearable. It took a while to identify the source, but I eventually confirmed that unplugging this device immediately stops the sound. Plugging it back in causes the noise to return until charging completes.

Amazing product. I use it as my bedside clock and the amount of AQ information it provides is amazing. Well worth the investment.

I can't know for sure exactly how accurate the sensors on this thing are. However, it seems that the PM sensors, the CO2 sensors, the tVOC sensors, and noise sensors all respond as expected in certain situations. The PM sensors go up when smells from food cooking on the kitchen stove enter the room, although both the PM 2.5 and 10 readings always seem to be identical. The CO2 goes up after a night of sleeping with the door closed because, as a human, I exhale CO2. The tVOC sensors go up if there is a glass of beer or isopropyl alcohol in the room. Speaking or singing raises the noise sensors. So, I guess this was a fine purchase for my $150.

Ottimo articolo

Cumple su función Pero la batería sin conectarse dura solo 2-3 horas tiene que estar siempre conectado y cuando está conectado emite un ruido / pitido muy agudo que llega a ser molesto.

Ich wollte einen weiteren Sensor, der mir mehr Werte liefert als die Sensoren, die ich bisher hatte. Dieser Sensor ist wie ein kleines Tablet. Das Betriebssystem kann sehr schön angepasst werden, reagiert schnell und läuft zuverlässig. Man kann viele Sachen personalisieren, von den Einheiten oder Warnungen bis hin zum geplanten Abschalten des PM-Sensors, um das Surren des Lüfters bei Nacht zu vermeiden (er ist sehr leise aber hörbar für sensible Personen). Ich habe den Sensor mit ein paar anderen Sensoren verglichen, und er scheint schneller und präziser, was den Feinstaub angeht. Für das CO2 habe ich keinen Unterschied gemerkt. Alle CO2-Sensoren brauchen eine gewisse Zeit, um sich zu kalibrieren, und nach einem Tag mit regelmäßigem Fensterlüften lief der CO2-Sensor paktresch synchron mit meinen anderen Sensoren. Die Bedeutung des eTVOC-Sensors hatte ich anfangs unterschätzt. Gerade bei Putzmitteln oder ähnlichen Sachen kommt man hier oft in ungesunde Bereiche, und der Sensor erinnert einen zuverlässig daran, zu lüften. Der eingebaute Akku hält bei mir zwischen 6 und 12 Stunden, was für mich völlig akzeptabel ist. Allerdings muss man hier sagen, dass das Gerät beim Laden ein für sensible Menschen sehr unangenehmen Spulenfiepen von sich gibt. Das war für mich Anfangs fast ein Grund, diesen Sensor zurückzuschicken. Allerdings verschwindet dieses Geräusch zu 100 %, wenn der Akku erstmal geladen ist. Daher ist das ein Problem, über das ich gerne hinwegsehe. Die Automatische Helligkeit funktioniert super, sodass der Bildschirm nie stört. Man kann ihn aber trotzdem per Zeit an und abschalten oder ihn einfach temporär mit einem Tastendruck deaktivieren bzw. aktivieren. Selbst ohne App funktioniert der Sensor super, ohne dass man wichtige Funktionen vermissen muss. Das Anbinden mit der App war sehr simpel und innerhalb zwei Minuten abgeschlossen. Hier ein kleiner Minuspunkt. Wenn man sich das Wetter einer Stadt anzeigen lassen will, muss man ggf. mit dem Namen etwas kreativ werden. Manche Stadtnamen werden wahrscheinlich wortwörtlich aus dem chinesischen zurückübersetzt. Also einfach kleine Teile des Namens ausprobieren, man wird die Stadt bestimmt finden. Am besten etwas kreativ werden. Da ich diese Station eigentlich nur für meine Raumwerte nutze, ist mir das relativ egal. Ein ganz großer Pluspunkt ist außerdem, dass man den PM-Sensor selbst tauschen kann. Ein Austauschsensor kostet ungefähr 20 €. Da dieser Sensor ein kleines Gebläse verbaut hat (was man wie gesagt über die Nacht abschalten kann), muss dieser früher oder später mal gewechselt werden. Es gibt billigere Alternativen, aber keine, die so viele Werte in dieser Qualität in einem Paket zusammenstellt.

Très fiable, le MQTT permets une communication locale parfaite avec Home Assistant

Zeer eenvoudig en overzichtelijk in gebruik. Nadeel is dat ie eigenlijk alleen bruikbaar is als ie aan de stroom hangt. De batterij gaat maar een paar uur mee. Nog geen ervaring met de waardes, weet nog niet of die betrouwbaar zijn.