Evaluation of Meal Gesture Dosing in Adults With Type 1 Diabetes

Inclusion Criteria: 1. Is age 18-75 years at time of screening 2. Has a clinical diagnosis of type 1 diabetes for 2 years or more as determined via source documentation 3. Pump therapy for greater than 6 months prior to screening 4. Real-time continuous glucose monitoring (RT-CGM) experience greater than 3 months prior to screening 5. Must have a minimum daily insulin requirement (Total Daily Dose) of greater than or equal to 8 units 6. Is willing to perform ≥2 fingerstick blood glucose measurements daily 7. Is willing to perform required sensor calibrations 8. Is willing to wear the system continuously throughout the study 9. If subject has celiac disease, it has been adequately treated as determined by the investigator 10. If the subject has had any of the following cardiovascular events more than 1 year prior to of screening: myocardial infarction, unstable angina, coronary artery bypass surgery, coronary artery stenting, transient ischemic attack, cerebrovascular accident, angina, congestive heart failure, or ventricular rhythm disturbances they should be cleared by a cardiologist prior to participation, if deemed necessary by the investigator. 11. If the subject has had any of the following cardiovascular events within 1 year of screening: myocardial infarction, unstable angina, coronary artery bypass surgery, coronary artery stenting, transient ischemic attack, cerebrovascular accident, angina, congestive heart failure, or ventricular rhythm disturbances, they should be cleared by a cardiologist prior to participation. 12. Is of legal age and capable of providing consent 13. Is fluent in speaking, reading and understanding English Exclusion Criteria: 1. Has a history of 1 or more episodes of severe hypoglycemia, which resulted in any the following during the 6 months prior to Screening: 1. Medical assistance (i.e. Paramedics, Emergency Room (ER) or Hospitalization) 2. Coma 3. Seizures 2. Has been hospitalized or has visited the ER in the 6 months prior to Screening resulting in a primary diagnosis of uncontrolled diabetes 3. Has had Diabetic Ketoacidosis (DKA) in the 6 months prior to Screening. 4. Is unable to tolerate tape adhesive in the area of sensor placement 5. Has any unresolved adverse skin condition in the area of sensor placement (e.g., psoriasis, dermatitis herpetiformis, rash, Staphylococcus infection) 6. Women of child-bearing potential who have a positive pregnancy test at Screening or plan to become pregnant during the course of the study 7. Women who are breastfeeding 8. Females who are sexually active and able to conceive will be excluded if they are not using an effective method of contraception and do not agree to continue using an effective method of contraception for the duration of the study as determined by investigator. 9. Is being treated for hyperthyroidism at time of Screening 10. Has a diagnosis of adrenal insufficiency 11. Is using hydroxyurea at time of screening or plans to use it during the study 12. Is actively participating in an investigational study (drug or device) wherein he/she has received treatment from an investigational study drug or investigational study device in the last 2 weeks 13. Is currently abusing illicit drugs, marijuana, alcohol or prescription drugs (other than nicotine), per investigator judgement 14. Is using pramlintide (Symlin), DPP-4 inhibitor, GLP-1 agonists (as liraglutide (Victoza or other), metformin, SGLT2 inhibitors (as canagliflozin (Invokana)) at time of screening 15. Has a history of visual impairment which would not allow subject to participate in the study and perform all study procedures safely, as determined by the investigator 16. Is diagnosed with current eating disorder such as anorexia or bulimia 17. Has been diagnosed with chronic kidney disease that results in chronic anemia 18. Is on dialysis 19. Is a member of the research staff involved with executing the study.