**Innovative Automated Insulin Delivery System for Type 2 Diabetes** This study is testing a new machine called the "twiist insulin delivery system" to see if it helps adults with type 2 diabetes. Type 2 diabetes is when the body doesn't use insulin well. Insulin is a hormone that helps control blood sugar. This study is for adults who already use insulin and are at least 18 years old. To join, participants need to have had type 2 diabetes for at least 6 months and be using certain types of insulin. The study will also ask participants to do meal and exercise challenges. *Key Points:* - **Time Commitment**: Participants will need to make regular visits and follow specific routines during the study. - **Participation Requirements**: Volunteers must be able to safely operate the study devices and follow the protocol. - **Safety Considerations**: Risks include potential side effects from the study device, so participants must be comfortable with these possibilities. Not everyone can join. People with type 1 diabetes, certain medical conditions, or those pregnant cannot participate. Joining this study means you will help researchers learn more about managing diabetes!