Often it is necessary to visually control a room before entering. There are many reasons, e.g. to check whether there are one or more persons in the room, which objects are in the room, etc. The PKI 8050 Ultracam Videoscope system is equipped with IR power diodes and can also be used at night when the room is totally dark without being recognized by present people. Just slide the very flat strip light of only 4mm with integrated camera under the door and you can monitor the room due to its IR-light.