Review on 🔋 Efficient & Rechargeable Temtop Professional Electrochemical Detector: Expert Quality and Convenience by John Swain

A few years ago I bought an Airmon air quality sensor from Revain. I just received this speed sensor from Revain. Here is a comparison of the two devices. Both devices are very compact. Airmon is a 2" cube. Temptop measures 3 x 3 x 1 inches. Airmon has no display and doesn't constantly read air quality. I have to connect to it wirelessly via a smartphone app and then the data on the app's display The app saves past readings that I can scroll through for comparison. The app only takes one reading at a time; I have to press a button in the app again (then wait a few seconds) to get a different reading. On days with high air pollution levels I like to leave the Airmon outside to measure my air pollution which I can read from my smartphone while safely indoors. Temtop does not have a smartphone app but has a screen on the device.. It can be set to do so that it tests and displays the air quality either continuously (every 3 seconds) or only when the button on top is pressed.Since there is no wireless mode, I have to be physically near Temtop to to see the display. Temtop doesn't store past readings, but I've never really cared about Airmon's past data. Airmon is designed for use in Asia and does not display the US AQI Air Quality Index. It only shows PM2.5 and PM10 readings and then I have to convert them to AQI (there are websites that can convert the numbers for you). Designed for the US, temtop shows the US AQI as well as PM2.5 and a few other things I don't care about. None of them indicate ozone levels, which is a significant pollutant and would be good to know. So far, the PM2.5 measurements of the two devices are very close. I wouldn't be surprised if they have the same sensor. The readings are also very similar to sites like Purple Air, IQAir and AirNow (when I use them outdoors). Sometimes these sites don't match up (due to timing or location issues, or especially because Purple Air is notoriously inaccurate for wood smoke), but Airmon and Temtop are always on point, which is good enough for me. I know Airmon and Temtop are giving me readings right now, right here, unlike sites that use sensors that are some distance away and can show data several hours old. Pollution levels can change rapidly due to geography and wind patterns. I also like to use Airmon and Temtop indoors to decide when to run the air purifier and for how long. The Airmon battery usually lasts about 3 days before I need to recharge it. The Temtop's battery life is only a few hours (they advertise a maximum of 6 hours), which is annoying when you can't constantly plug it into a USB charger. Airmon is $33 on Revain. Tempotop costs $90. If the temtop had been priced more like the Airmon and if it had had a battery life of more than 1 day I would have given it 5 stars. At 3 times the price of Airmon I only give Temtop 4 stars.