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 # Public Health Instrumentation
 
-A collection of open instruments to help the pandemic recovery effort, supplementing widespread biological testing with widespread early warning systems. Examples include thermal monitoring for temperature sensing, IR/vis pulse oxygenation measurement, RF respiration sensing, PPE airflow validation, etc.
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+A collection of open instruments to help the pandemic recovery effort, supplementing widespread biological testing with widespread early warning systems. Examples include thermal monitoring for temperature sensing, IR/vis pulse oximetry, RF respiration sensing, PPE airflow validation, etc.
+
+## explorations
+[pulse oximetry](pulseox.md)