[The PKE meter beeps gently, indicating Kölliker's presence in the immediate vicinity. Egon extends the device for Jolene to hold and inspect with her Tendrils™]

This is a PKE meter. It picks up on psychokinetic energy emitted by objects or supernatural beings within a three hundred meter radius. For example, psychic and ghost-type Pokémon or moves.

[So, yes, science! Kö wiggles her ears with excitement, scooping up Crybaby in her gel-filled arms and scratching her behind the ears like she's seen Egon do for Venkman's cats. In a tone rather reminiscent of Egon's voice:]

< Who is a good kitty? You are a Good Kitty! >

[She's picked up some things.]