Dexcom G6 Sensors - 3 Pack:. The newly improved sleek and slim Dexcom G6 sensors continuously measure your glucose levels and send that data wirelessly to a display device through a transmitter. When the Dexcom G6 Sensor is attached to a transmitter it offers real-time glucose readings on your smart device or on the Dexcom G6 Receiver. You can use these thin, cutting edge, Dexcom G6 sensors with your Dexcom G6 Transmitter and Dexcom G6 Receiver in order to get your glucose readings in real-time. The G6 sensors transmit glucose levels wirelessly to your display device using a Transmitter, which you can then read on the Receiver.