THEMA:

Hight there,

I would like to know what is the recommended Receiver Voltage Setting to create an Alarm.

This depends on the battery type or voltage regulator you use to power the receiver.
So what do you use as power supply?
For direct powering by a 2s lipo i use 7.2 V as alarm level which is a quite conservative value.

Lukas

assuming you use lipos, then a voltage alarm IMHO should be somewhat between 3.4-3.5V per cell. as funicapi has written, 7.2 on 2cells would be 3.6 per cell and is indeed really conservativ.

speaking about RX voltage, there are not many amps running (depending) on how many servos and other stuff you are feeding. but a lipo cell that is at 3.4V should still have enough capacity to guarantee a safe landing. so on 2S 6.8 is for me the minimum. but than again ... if you are using a bec, than the voltage alarm is kind of useless. e.g. 2S lipo on a bec that deivers lets say constant 5.4V ... that would mean the 2 cells would be drained down to 2.7V per cell and that is definately the death for the cells.

so if on a direct to 2S and HV setup, go with 6.8 / 7.0 / or like funicapi 7.2.
if you use a LV setup with a bec, than better use any capacity sensor and an appropriate alarm on capacity.
or sth. like a unilog2 by sm-modellbau. this sensor delivers single call voltages by the balancer for up to 6 cells.