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Quantity
1
Description
4.5
4 ratings
5
4
3
2
1
Satisfied
Works very well. Seems to agree fairly closely with another standalone sensor. I am looking forward to playing with it more. A couple of quibbles: 1. I wanted to use it on a Mac; however, the GasLab software apparently does not run native on MacOS, requiring the hassle of setting up a virtual machine. Not a big problem for me, I copied and ran the Python program found in the app note AN127. 2. in order to determine the serial device used, there is a simple old trick: list the /dev directory before and after plugging the sensor in, save the listing to files, and diff the files. On Mac you will then find 2 serial devices, /dev/tty.usbserial-XXXXXX and /dev/cu.usbserial-XXXXXX. I am using the "cu" device but I understand either will work. 2. this Python program is a good start but my sensor always responds to the 3rd poll request with " M ?\r\n". This crashes the program because it can't convert that to a float. I revised the program to use readline() and throw the returned data away unless it starts with " Z ".
Lex · February 2, 2021
Great for Calibration
Used it to calibrate cheaper sensors for a home air quality hobby project. Very useful.
Jeffrey · August 26, 2019
Good Product - Quick to arrive and quick to set up
Very satisfied with the purchase. The sensor came in a couple of days, and it was easy to write a little code on a raspberry pi to read and save the data. The device seems to be very accurate and responsive. I also really appreciate the extensive hardware documentation. It also feels good to support an American hardware company, since the market seems to be dominated by Chinese or Indian sellers.
Dillon · June 8, 2019



