When is the last time you have air leak with your undercarriage and land on belly. Also how often by accident turn on your TX with gear up?
This kind of problem happen all the time and it costly to repair.
We have come up with the design to liminate this kind of problem for good.
This unit is cost less than premium servo. We highly recomend all aircraft with air retract system should have one onboard. It just another investment to protect your models.

We proud to annouce our new Landing Gear F/S System. With many hours of testing and it works fawlessly. Is very easy to program and friendly use. Hook LG F/S to retract channel and retract servo hook to this LG F/S. That simple.

Specification feature:
Digital programable to deploy landing gear when pressure drop below setting.
F/S feature to protect from accident gear up when turn on Tx.