Why aren't models prior to Active2 supported?
In case of Blood Pressure(BP), the previous model is not a specification for a sensor that can measure blood pressure. We need a higher-performance sensor than a sensor from an existing product that measures only the heart rate only. Because blood pressure measurements use the Pulse Wave Analysis (PWA) method, accurate analysis of the pulse shape is needed. These specifications are being applied from Active2 onwards.
In case of ECG, Electrode sensors are required for ECG measurements, but they are not mounted on previous models.
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