Neural truncheon

From Memory Alpha, the free Star Trek reference

A neural truncheon is a weapon typically used by the Breen to contain and control prisoners. On contact, it sends a surge of electricity throughout the body which paralyzes the recipient. Repeated contact may result in short-term damage to the brain, such as a concussion or temporary coma. (DS9: "'Til Death Do Us Part", "Strange Bedfellows")