Atmos.com produces sensor modules, interface circuitry, and automated calibration techniques. They are located in Pescadero, California. The company has been in the market for over twenty years; therefore, they are able to provide you with high quality items as well as good customer service. All Atmos modules are ready to plug and use with efficiency. Regardless of the amount of modules you need, they will get you as many as you require. If your company needs a module, you have to check out this site. On the main page of the web site there are diverse links on the top, such as: products, articles, etc. Their applications include barometers and altimeters, transmitter, preicision barometer compact module, calibration automation software, etc. In addition, there is a section designated to articles and application notes, such as: sensor interface and calibration solutions via the Internet and Atmodule four-wire serial interface, among others.