The Pulse Sensor Kit is a kit. It does contain an assembled PCB Pulse Sensor, but it also has a collection of other supplies that you need to get the most out of the Pulse Sensor: a Velcro strap (to wrap the sensor around your finger with), an ear clip, and vinyl dots (to make the sensor more comfortable and reliable when contacting direct skin). It doesn’t sound like a lot, but using these helps you get good long-term readings. Unless you are a seamstress or jewelry designer, these parts are not exactly effortless to source. We tested a lot of Velcro straps and ear clips before selecting the ones that finally made it in our kit.
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