From Season 1, Episode 19A "Supersonic Owlette"

The Teleporter is a handheld device invented by Romeo for teleporting a target to any location. Introduced in "Supersonic Owlette", Romeo used the device to teleport himself into the PJ Masks Headquarters while also teleporting the PJ Masks out of it whenever they got in. In "Romeo's Crystal Clear Plan" Romeo built a new teleporter to teleport inside and get the moon crystal.