Why does Peter Gamma from www.petergamma.org not find a device from Adinstruments, Peter H. Charton and Hugo Plácido da Silva to measure respiration rate which fit’s for his needs?

The Adinstruments devices such as «Tracking Respiratory Rate – Pneumotrace in PowerLab» Offers measuring the respiration rate.But by experience, devices from Adinstruments cost as much that it is not worth it to request a quote for it. We have the alternative Inductive Respiration (RIP) Sensor from BIOSIGNALS: which is 800 USD. The Respiration (PZT & …