This production intercom doesn't come with an external power supply. It's a 2-channel master station model MS-200. Note: No power supply is included.

Using this production intercom is easy. First, connect it to your existing setup as you would with a regular intercom. But remember, since it doesn't have a power supply, you'll need to use your own compatible one. When choosing a power supply, make sure it matches the requirements of the MS - 200. For maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you notice any issues, check the connections first. If the problem persists, it might be time to consult a professional.