This unit has only undergone a power test. It comes with the correct power supply. One minor issue is that one of the rack ears is slightly broken.

Using this F22 Time Code Generator and Reader is easy. First, connect it to the correct power supply that comes with it. When setting it up, be careful around the slightly broken rack ear. Try not to put too much pressure on it to avoid further damage. As for maintenance, keep it in a clean and dry place. Periodically check the connections to make sure they're secure. If you notice any other problems, it's best to have it checked by a professional.