People, RTFM!
Page 15:
"To maximize the life of the battery, the transmitter turns itself off when there is no pressure change for more than 40 seconds. It also turns itself off when the pressure is 14 bar/200 psi or less." Also, the Luna "...turns off automatically after 3 minutes without operation."
When you open the valve and your Luna is on, you'll see the pressure for about 40 seconds. If you don't breathe from the regulator so that the pressure does not change then the transmitter will turn off.
If you have a loss of signal underwater and the tank is not below 200 psi (which I have done once) then you might have a problem. The manual suggests that you put the transmitter on the same side as where you wear your Luna. My wife's Luna locked up in Dominica last month because it lost signal underwater. It would not stop beeping even though I could read her pressure with my Luna and her Luna could read the pressure eventually. I think it was a combination of low battery and her transmitter was on the right but she was wearing her Luna on the left.
I've also been told by a Scubapro tech that some strobes will cause a signal loss underwater too.
Page 15:
"To maximize the life of the battery, the transmitter turns itself off when there is no pressure change for more than 40 seconds. It also turns itself off when the pressure is 14 bar/200 psi or less." Also, the Luna "...turns off automatically after 3 minutes without operation."
When you open the valve and your Luna is on, you'll see the pressure for about 40 seconds. If you don't breathe from the regulator so that the pressure does not change then the transmitter will turn off.
If you have a loss of signal underwater and the tank is not below 200 psi (which I have done once) then you might have a problem. The manual suggests that you put the transmitter on the same side as where you wear your Luna. My wife's Luna locked up in Dominica last month because it lost signal underwater. It would not stop beeping even though I could read her pressure with my Luna and her Luna could read the pressure eventually. I think it was a combination of low battery and her transmitter was on the right but she was wearing her Luna on the left.
I've also been told by a Scubapro tech that some strobes will cause a signal loss underwater too.
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