Anodyne relay

An anodyne relay (sometimes called an anodyne circuit) was a device used for various purposes on Federation starships.

In 2372, the USS Voyager came across Pralor Automated Unit 3947 damaged in space. Lieutenant B'Elanna Torres connected a series of modified anodyne relays to its chromodynamic power module, which allowed her to infuse warp plasma into its energy matrix. 

When Neelix had a problem with a thermal array in his galley later that year, Samantha Wildman noted that he needed a new anodyne relay. 

In 2373, there was a minor malfunction aboard Voyager. Tom Paris bet that the anodyne relay was responsible, while B'Elanna Torres said it was a plasma conduit. Paris won, and had Torres join him in the Klingon martial arts program. 

That same year, while traveling with Odo aboard a runabout, Quark complained about a buzzing noise coming from under a panel. Odo suggested that it was a faulty anodyne circuit, to which Quark replied that faulty anodyne circuits make a hissing sound.