Based on this product's specifications, here are some alternatives and similar models
Electrode set Beurer 8-piece for TENS/EMS models EM 40/41/41.1/49/80/95
Summary description:
Replacement 8-piece electrode set compatible with Beurer TENS/EMS devices EM 40, EM 41, EM 41.1, EM 49, EM 80 and EM 95 (MPN 661.02, EAN 4211125661021). Includes multiple reusable adhesive pads for muscle stimulation and pain relief applications. Designed for regular home use and physiotherapy support; provides easy attachment, electrical contact with device leads, and straightforward maintenance.