This Blackmagic Design ATEM 2 M/E production switcher is a great tool for video production. Note that it does not come with a power supply. You'll need to source one separately for it to work.

Using this production switcher is easy. First, you need to connect it to your video equipment. Since it doesn't come with a power supply, make sure you have a compatible one and plug it in. When using, keep it in a well - ventilated area to avoid overheating. As for maintenance, regularly clean the exterior with a soft, dry cloth. If there are any issues, check the connections first. And always power it off properly after use to extend its lifespan.