■RECORDER
A device that can record images from before an event occurs is called a skipback recorder.
The images below can be saved before and after an external trigger signal is input.
You can also extract the images you need as still images.
■USB CAMERA + SOFTWARE
Also, if you can use a PC without using such equipment, you can record videos before and after the trigger occurs by using a USB camera or GigE camera and equipment monitoring drive recorder software.
