[AllanG]

Hi AllanG
Where did you connected the Bat pin of your TX unit? I bet it is unconnected.  

If you are powering your transmitter unit from a wall adapter power supply, simply connect the Bat pin to the 12V pin, if you are powering your TX unit by a solar system, connect the Bat pin to the positive pole of your 12V battery.

This was done this way to allow monitoring the battery voltage of a solar powered system, instead of just allowing monitoring the voltage applied to the TX unit.

Try it, and let us know the result.

Werk_AG, could I possibly make such a foolish mistake?? I will leave you to decide the correct answer yourself.....

All is now working perfectly, thank you, and the PLUS rx is a great improvement!! More details soon.

Best regards,

Allan.