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Ma-RX42E-X V3.0 is an ultra-micro receiver that integrates 5A/1S brushless ESC. Its volume is only 22.5*12.0*6.5mm. The built-in DCDC boost circuit provides excellent low-voltage performance for the receiver. A total of 10 versions are currently available.



1)Modulation:Compatible FLYSKY AFHDS-2A
2) Super small size: 22.5*12.0*6.5mm(not including antenna)
3) Super light: 1.35g (not including power cables and motor connector)
4) Working voltage: 2.7~4.5V
5) Built-in 4.5V boost circuit
6)Support double aileron servo mode (reverse phase, need to use GUI setting)
7) Built-in 5A/1S brushless ESC
8)Excellent low-voltage working performance
9)Auto Binding
10)support TELEM function
11)1.00mm 3P steering gear interface
12)Support online firmware upgrade
13)Support GUI setting function
14)Ma-RX42E-A2-G Supports SR3X 3-AXIS function(GYRO function)

Basic version

3)TELEM function:Yes
4)SR3X 3-AXIS function(GYRO function):No

Advanced version

3)TELEM function:Yes
4)SR3X 3-AXIS function(GYRO function):Yes

Connection Diagram


Double Ailerons Mode

Double-aileron mode is developed for those model airplanes using double ailerons. This function can simplify servo wiring connection and transmitter set up. The user can set the M.BUS port on the GUI as the AIL channel of the inverted output, then the double aileron servo mode can be turned on.

Auto binding

As it is difficult to reach the binding button when the receiver has been installed inside the plane, we developed self-binding function, it works like this: The receiver will enter binding mode automatically after powered and no signal for 15 seconds (slow flashing LED light turns to fast flashing), then complete the binding operation according to your transmitter binding manual.

TELEM function

TELEM function is useful on monitoring battery voltage, receiver working voltage and its signal strength as well as its working temperature in real time, through which customer can get working state of receiver and battery discharging state under control, so flying out of control range and over discharging will rarely happen ( for brushless motor rotation speed or flight height monitoring, customer needs to choose a more advanced receiver)
NOTE: The effective control range of TELEM function depends on transmitter, it is possible that this would happen: the working range of the receiver is far more than TELEM function effective range, it is normal and alright!

SR3X 3-AXIS function

SR3X is a flight assistance system developed specially on fixed wing model airplanes. It can not only help the beginner control model airplane, but also help the senior pilots get better and stable flight attitude.
SR3X 3-axis gets three working modes: shut off; low sensitive working mode, high sensitive working mode. Customer can set up CH5 on the 3-gear switch of the transmitter through which decides its working mode. The blue LED on AR3207G-D is for indicating the working mode:
1)blue LED light is shut off indicates SR3X 3-axis is turned off.
2)Solid bright blue LED indicates low sensitive mode.
3)blinking LED indicates high sensitive mode.

M.BUS Interface

M.BUS interface is a multi-function interface:
1) FW upgrade/Function setting interface;
2) Output channel signal;
3) Output SBUS signal;
4) Connect other sensors (under development);
Note: It is forbidden to connect the battery to the receiver when the PC is connected to the M.BUS interface.

How to connect RX to GUI software(Download link:

The user needs a USB programmer (USB MX-PG02, when used on Ma-RX42E-X V3.0, the switch on the programmer is set to the I position) before using the GUI software to configure the receiver function or upgrade the firmware. Connect one end of the USB programmer to the M.BUS port of the receiver, and the other end to the PC. After opening the GUI software, select the correct port, click "Connect", and then the various configurable function modules on the receiver will be loaded and displayed. The current setting information of the machine.


MA-RX42E-X V3.0 series receivers have the following 10 versions



All items will be checked carefully before shipment.We will pack and ship the parcel with 5 day. ( There will be delay when holidays. )
Tracking information is available within 1-4 days after shipment. We will ship the parcel via China Post or Aliexpress. Usually, shipping time is 15-60 business days. If you can't receive your item, please feel free to contact me for help.

Service Time

Beijing: From 9:00 am to 18:00 pm
London: From 2:00 am to 11:00 pm
Moscow: From 4:00 pm to 13:00 pm
New York: From 21:00 pm to 6:00 am


If you are not satisfied with the items, please feel free to contact me for solution instead of leaving neutral or negative feedback, We will try our best to solve the problem.
Please leave positive feedback and 5 stars if you are satisfied with our items and services. :) Thank you


1)The Ma-RX42E series RX are Not a copy or fake products of other companies;
2)MXO-RF and CROSSOVER-RX brand guaranteed its high quality and continuous technical service.

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