: Internal memory for 12–18 ECG files; expandable via SD card (optional). 📖 Essential Operations Description AUTO

No. The manual explicitly states that motion artifacts will corrupt the signal. Use only while seated or lying down, breathing normally, and remaining still.

file was gone—corrupted, replaced by a single line of text on his screen: SIGNAL STABLE. CALIBRATION COMPLETE.

: Three primary modes: AUTO , Manual , and Analysis (R-R).