This is Racetrack's computer sensor or scanner that she uses to scan the Cylon Basestar computer in Season 3, Episode 7 "A Measure of Salvation". It's two parts, each custom made by the production for the show. One part has two prongs made of plastic held together with aluminum brackets. There are red LEDs mounted in the end of each prong to light them up (although one is not functioning right now). The other piece looks like it's made out an old TV tuner (or something) with blue LEDs mounted all over it, and encased in a acrylic tube. Both run on 9-volt batteries.Here you can see it in use in the background. It's supposed to look like it's attached to the computer in the case.
