How you can set up the transmitter with the MBar EX sensor for automatic opening of pneumatic retractable landing gear, if the pressure drops below the defined level.

After connecting the MBar EX sensor to the receiver, you can set the minimum pressure threshold in the DC/DS transmitter using the telemetry controls (Mx1). In the screen below the minimum pressure threshold is set to 200.0 kPa (2 bar). If the air pressure drops below this level the telemetry switch Mx1 "turns ON".

In the settings (DC/DS transmitter) of the logic switches (L1), select control 1 and assign telemetry control Mx1 which you have created above. For control 2, you can select the manual switch to control the landing gear open/close (Sf), if isufficient pressure is in the pneumatic system (more than 2 bar). As a condition of this logic switch we select the function OR.

Now you have to assign this logic switch (L1) to the correct function (Gear).

Now the pneumatic landing gear will work as follows. If the air tank pressure is more than 2 bar, you can open and close the landing gear with the manual switch (Sf). If the pressure leaks from the system or we have “depleted” the pressure by frequent opening/closing, the logic switch using the telemetry controller automatically opens the landing gear.