There are three voltage ranges to choose:
Please check the battery voltage division ratio for each option:
2S - 3S 4:1
3S - 5S 6:1
Does not work with X8R receiver (see analog voltage sensor for this application).
Does work with: D8R-II Plus and XP, D4R-II, XSR, X4R, X6R and possibly others.
NOTE: No longer supplied with wires.