Gi?i m?i (bao g?m t?t c? gi?i nào có s? thay ??i, c?p nh?t m?i ho?c ?i?u ch?nh)You may possibly plot the minimum and optimum peak measurement values or document the waveform trace. And, with expandable microSD memory, recording periods can be done for around 14 days. This recorder is much more potent With all the addition of Recorder Function D