The Medtronic Guardian 4 Transmitter Kit is an essential element of the Guardian 4 continuous glucose monitoring (CGM) system. This small, wireless device attaches to your Guardian 4 sensor, which is inserted just under your skin. The transmitter then continuously sends your glucose data to a compatible device, such as the MiniMed 780G insulin pump or a receiver, for real-time monitoring. This eliminates the need for frequent fingersticks, providing a more complete picture of your glucose levels throughout the day and night.