So it has been way longer than 6 months and. There is a square hole in the plastic there. Dexcom G4 Platinum - Diabetesnetcom Our dexcom g4 transmitter is a transmitter that is like new that has been refurbished with new batteries. Dexcom g4 transmitter life . Dexcom g4 platinum is a freestanding system for continual glucose monitoring (cgm) that measures tissue glucose throughout the day and night. Either it doesn't send out an audible signal, it was on vibrate (i didn't think to check it at the time but i usually have it on hypo repeat at night. It is the diabetes community's worst kept secret that dexcom cgm (continuous glucose monitor) sensors last well beyond the seven days they. Within 5 minutes you should get a pairing request to accept. There is a small sensor under your skin, which is as thin as a strand of hair, sending signals via a small transmitter to a receiver. An alert message shows when your transmitter has about one week left. In ea...