Order No. PFS-041 Liberty Vaginal Exerciser. This internal sensor is designed for use with the Liberty Electrical Stimulation Home unit only. **Please note that a Patient Prescription Verification Form (if the buyer is a patient) or Clinician Verification Form (if the buyer is a clinician) must be submitted before shipment confirmation can begin. **If you are already a member of our website, or have already submitted your form from ordering another item, please disregard the previous message.