I've taken this out of storage. It looks like a distributor, but I don't know how to use it. The exterior seems relatively clean. I've only confirmed its operation by plugging it in and pressing the light-up button. Please understand that we cannot provide any warranty for any defects. Thank you for your understanding. m(_ _)m ※The following is AI-generated: The device in the image is a multi-viewer, MV-40E, made by FOR.A, a Japanese video equipment manufacturer. Main Functions and Overview This device inputs up to 4 composite video signals (analog video) and displays them on a single monitor. Main uses include: Building surveillance systems: Used to monitor the images from four security cameras simultaneously on one screen. Video editing monitoring: Used in situations where multiple sources need to be checked at the same time. Front Panel Button Operations The buttons visible in the image have the following functions: POWER: Turns the power ON/OFF. SUPER: Likely a function to overlay information such as titles and dates on the screen (superimpose). MENU / SET: Used to configure various settings of the device (time adjustment, title input, etc.). FREEZE: Can freeze the video of each input channel (1-4). OUTPUT SEL: Selects the screen layout and main screen to be output. Please check the photos and purchase with the understanding that this is a used item. We will ship it in simple packaging.