The transmitter generally comes with your order of actual sensors 😊

Yeah, I get 3 monthly supplies. 3 boxes of sensors and 1 transmitter xx

My prescription only says sensors and receiver

For the Dexcom you should be getting these components.. 1. The Sensors- These are the part that connect to the skin and sense the glucose information. They are medium sized with an orange button.. 2. The Transmitter- The transmitter sits inside of the sensor and transmits the glucose information. This is a little gray item that clicks in the the open spot once the sensor is inserted. 3. The Receiver- This is the phone like object which receives the glucose information and shows you your graph.. When you first start out with Dexcom you should be getting a box or more of sensors, a box with a transmitter, and a box with the receiver as well. You will need (if you aren't using the dexcom app) all of these components to start. I hope this helps

depending on your phone your phone could act as a transmitter ! just check your app store and see id dexcom dropped an app for your specific device !!