Anyone who has used a TENS device for chronic pain, tingling/burning, carpal tunnel, or neck stiffness, what was your experience?

My OTs used it occasionally, I used it for carpal tunnel today. Will try cervical (neck) tomorrow.

https://tens7000.com/blogs/blog/tens-unit-electrode-placement-guide?srsltid=AfmBOoputoBK4ryrKAQW7oDUvQ8_idqfoYANoavS-WjMHYs31S132HcU