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Measuring the absolute pressure of the environment using a digital barometer such as this has some interesting applications
Width (mm) 37
often denoted Ev)
Frequency Range:5
Pressure range: 300 to 1100hPa
TTP223 Touch Key Module 25D Measuring the absolute pressure ofThe TTP223 Touch Key Module is based on a touch sensing IC (TTP223) capacitive touch switch module. A capacitive touch sensor module based on the dedicated TTP223 touch sensor IC. The module provides a single integrated touch sensing area of 11 x 10. 5mm with a sensor range of ~5mm. The touchpad detector IC replicating a single tactile button, for replacing traditional direct button key with diverse pad size An onboard LED gives a visual indication of
