Sensor and transmitter support and resources
![Guardian™ 4 sensor and transmitter](/res/img/download-library/img-gs4.png)
Note: Sensor and transmitter appearance varies by model.
Continuous glucose monitoring (CGM)
Guardian™ 4 sensor
Guardian™ Sensor 3
Guardian™ Connect system
Caring for your transmitter
![](https://img.youtube.com/vi/VEwrxDNivYk/maxresdefault.jpg)
Inserting a sensor with help from someone else
Get step-by-step instructions for inserting a sensor on your arm with the help of a partner.![](https://img.youtube.com/vi/lRYtu2lXL30/maxresdefault.jpg)
How to insert the Guardian™ 4 sensor on your arm
Get step-by-step instructions for inserting a sensor on your arm.![](https://img.youtube.com/vi/5zrHffzf9ak/maxresdefault.jpg)
Understanding Sensor Updating alert
Get clarity on what to do if you ever get the Sensor Updating alert while using your MiniMed™ 780G system with Guardian™ 4 sensor.