[werk_ag]

...
Can I somehow simulate the connection of the two missing sensors in order to cheat the receiver and thus close the sequence?

Hi,

Yes, you can!
Just program the Pro2 PLUS to work is Test Mode. You will find how at the end of the Config_Options.h

Bear in mind that, running a system in Test mode, have some collateral effects. After you end all your test, and right before starting to use your system in prodution, you MUST perform a Factory Reset (search the forum about how to do it).

Code:

// --------------------------------------------------------------------------------------
//   Test Mode : Never run a live system in test mode
// --------------------------------------------------------------------------------------
bool Test_Mode = true;    // false= Normal working mode, true= Test mode only (no logger, no usb connection)

Rgs.