does my TX have a low voltage warning?

[MILLER4PRESIDENT2020]

stock transmitter? do that give any clues. I have probably 40-50 hours on the stock batteries. Is this something to worry about, I guess if the batteries become weak enough to transmit an acceptable signal then the phantom should enter failsafe but still I don't like to rely on failsafe. Ive tested failsafe twice and it works but its something I'd prefer to never have to rely on....

 

[Roadkilt]

You'll get a continuous beep when the batteries fall below the set voltage. Took me about 3 months and over 200 flights to get that point on regular alkaline batteries. That includes a lot of warmup time and calibration time.