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The GSM Validation. (a) shows the front side of the prototype through which the USB is inserted and connected to the Arduino board to upload the developed Arduino script. (b) shows sample low temperature and pulse rate measurement without attaching the sensor to the human body (made testing purpose), (c) shows the GSM triggered to send SMS, (d) shows the SMS sent successfully to the caregiver phone number, (e) shows the content of the message received from the Lvital device.
