AUVON Live Smart, Live Healthy AUVON TENS Electrode Pads With TENS Replacement Electrode Pads from AUVON, you can maximize the effectiveness of your machine and feel great again! Whether youre using a TENS, EMS or IF unit, our pads are universally compatible with any models using pigtail pin-type connectors (Such as AUVON Rechargeable TENS unit, He..