The MLT1020FC Plethysmograph is an infrared photoelectric sensor used to record changes in pulsatile blood flow from the finger. The Plethysmograph operates by recording changes in blood volume as the arterial pulse expands and contracts the microvasculature. The Plethysmograph can be plugged directly into a PowerLab Pod port, or Front-end (amplifier) such as the ML142
GP Amp or any ADInstruments
Bridge Amp.