This unit is a great choice for video monitoring, but please note that it does not come with a power supply.

This Blackmagic Design MultiView 4 HD is used for video monitoring. To use it, you first need to connect it to your relevant video system. Remember, this device doesn't have a power supply, so you'll have to use your own suitable power supply. When using, keep it in a dry and cool place. For maintenance, clean the surface regularly with a soft cloth. Don't use abrasive cleaners as they might damage the device.