Hello Mary,
I always look up unfamiliar treatments or solutions for pain to see what the experts say...not just physicians, but the researchers who study these things.
I had never heard of "Scenar" before, so I googled as a beginning and found many ads an promotions, but no evidence of independent testing or scientific studies. So, I dug a little further, to see if there were any clinical studies (one started but results never reported), research papers (none), reports from universities or teaching hospitals (no) or in clinical journals (no). So is the device tested or approved by the FDA No. Is there any information about the qualifications of the people selling and/or recommending the devices? No.
Do we hear about it in mainstream medicine or PT? No, and we surely would have if it was as fabulous as advertised - it has been on the market for about 30 years.

Where did you hear about it? What kind of pain are you hoping to relieve?
Sue