This Grass Valley video frame tally expander comes without a power supply. Key feature: No power supply included.

Using this Grass Valley video frame tally expander is easy. Just connect it to your relevant system as per the device's connection ports. Note that you need to provide your own power supply since it's not included. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you encounter any issues, check the connections first. And always handle it gently to prevent any internal damage.