The Plethysmograph (Finger Clip) is an infrared photoelectric sensor used to record changes in pulsatile blood flow from a finger or toe. Uses reflected light and works best where the light can reflect from the bone beneath the tissue. Can be connected to a Bridge Amp or directly to a Pod port of a PowerLab.

This product is not currently available for purchase in the EU.

The Plethysmograph (Velcro Strap) is an infrared photoelectric sensor used to record changes in pulsatile blood flow from the finger, toe or forehead. 

This product is not currently available for purchase in the EU.

The IR Plethysmograph (Ear Clip II) has an infrared photoelectric sensor which can record changes in pulsatile blood flow from the ear. The IR Plethysmograph (Ear Clip II) is made from black acrylonitrile butadiene styrene (ABS) and has a lead length of 1.3 m, making it suitable for attaching to the ear when running on a treadmill. It can be plugged directly into any ADInstruments PowerLab Pod port.