asimace

Hi,
as far as I know if you are using programmed mixes on your transmitter you cannot achieve your goal with any kind of failsafe on the market.
The pneumatic gear failsafe, like the tamjets one you mention, can only pass the signal downstream to the sequencer/gear valve...
If you have programmed the sequencing in the transmitter, you would need a sensor to send back the air pressure to the transmitter in the telemetry stream and then set an alarm in the transmitter that would initiate the retract sequence.
Cannot do that I'm afraid.
However if you are using the built-in sequencer in the Powerbox and you are using multiple connections between RX and Powerbox (not single SRS connection) you can send the retract signal from RX to failsafe and then from the failsafe to the Powerbox.
The failsafe would then trigger the sequencer and retracts on the Powerbox.

Mauri