What happens if I lose or break my Propeller sensors? Mandy 23 August 2019 15:59 Updated Follow Don’t worry. Simply call or email us so we can get you what you need. Related articles I changed medications. How do I get a new sensor? What do I do with my old sensor? MDI Sensor Technique How do I know if my sensor stopped working? What is a sponsor? How to attach your Sensor for MDI with White Button Comments 0 comments Please sign in to leave a comment.