The clock cameras came out in 2014.
The clock camera is used for long distance, and it has n sold to many countries. It is used in many places, such casinos, tournaments etc.
If it works with poker analyzer, the clock camera distance is 2-6m. With the remote controller, it would scan longer distance.
If it works with back marked cards, the camera lens is spy camera lens. The distance from the back marked cards is 3-4m. At last, you can see the poker cards points and suits on TV or PC.
The clock can use the AC power, you don’t need to worry about it can not work.