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)It is possible to either plot the minimum amount and greatest peak measurement values or document the waveform trace. And, with expandable microSD memory, recording sessions can be done for as much as fourteen times. This recorder is even more effective Together with