Early detection is the key to cabin pressurization failures and that’s precisely the purpose of the $399 Aviation Technology AltAlert personal cabin pressure sensor.
The six-ounce AltAlert measures 3.0 by 1.75 by 0.75 inches and can be mounted on a flat surface, clipped to a sun visor or worn on clothing. Powered by a 3-volt lithium CR2032 coin battery, the device utilizes an internal algorithmic software program to sense cabin pressure and rate of climb by way of a temperature corrected pressure sensor.