You can test various sensor devices using serial communication protocols, such as RS-485, RS-422, and RS-232, in real time using a mobile phone, and measure sensor operation.
Since it can be easily accessed from a mobile phone, which is always with you,
it is convenient even in challenging work environments.
Also, while specific sensors can be tested easily,
users can also test by directly inputting communication strings,
so any sensor device that uses ASCII strings can be tested.