RS485 Joystick Boot Ready To Control One Specific PTZ

We have a client with the following requirement:

A PTZ camera connected to a screen and controlled by a joystick, all mounted on/in a container.
All equipment is usually without power, just on storage.
But when deployed they just want to switch on the power and everything has to be ready to use within 30 seconds:

  • The camera must show up in full screen on the monitor. (Analog camera connected directly to a monitor - OK)
  • The joystick must be able to control the PTZ right away. No log-in, no selecting of camera to control. Just power on and start controlling the only connected camera. So. any suggestion for a joystick that can do this? (The ones I have tried require log-in or selection of camera after startup)
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