TENS unit

Carry On Bags: Yes
Checked Bags: Yes

TENS (Transcutaneous electrical nerve stimulation) units are allowed in both carry-on and checked bags. If your doctor has told you that your specific TENS unit shouldn't go through an X-ray, you should notify the TSA officer so they can conduct alternate screening. To help you get through security more efficiently, remove your TENS unit from your carry-on bag and put it in the screening bin so the TSA officer can get a clear view of it.

 The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.