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. 2016 Oct 13;11(10):e0164038. doi: 10.1371/journal.pone.0164038

Fig 1. Wireless Personal Use Monitor (wPUM) with various commercially available ENDS.

Fig 1

The wPUM is designed with an aperture that can accommodate a variety of ENDS and conventional cigarettes. The wPUM records digitized signals at the rate of 40 samples/sec to the memory of the device.