4 Channel UM Receiver w/Brushed ESC (DSM2/DSMX)

$59.00 $47.99

This 4 Channel UM Receiver w/Brushed ESC is Spektrum DSM2/DSMX compatible and features two on-board linear servos that are mapped to Rudder and Elevator.  No soldering required as these boards comes pre-wired with a three inch battery lead with UM connector AND a two pin female motor plug (1.27mm spacing).

Note: This item replaces all instances of the now discontinued PKZ3351, PKZ3352, PKZU1151, PKZU1152, SPMAR6400 and SPMAR6410 as used in many ultra-micro model aircraft applications.  And while generally comparable in size and scope to the ParkZone/Spektrum series of receivers listed above, this product will not be a direct fit for mounting solutions made exclusively for the original ParkZone equipment.  We suggest direct mounting of the board using double sided foam servo tape.  Additionally, to maintain compatibility with the setup instructions provided in Stevens Aeromodel brand kits, we suggest a modern DSM2/DSMX compatible Spektrum transmitter, with computer mixing functions.  Such transmitters will support swapping the elevator and rudder channel assignments for the RX and will allow proper mapping of the rudder output on the 4 Channel UM Receiver board to the roll control stick on your transmitter.   Cheap bind and fly “Game box” style controllers, non-computer models and many older Spektrum/JR radios, lack these conveniences – requiring more difficult manual setup.

Compatible with Spektrum DSMX and DSM2 transmitters
Item Number: SAR6410/S

In stock

Additional Details

Product Highlights
Spektrum DSMX/DSM2 compatible receiver
Onboard linear servos mapped to Rudder and Elevator
Built-in 3A brushed ESC with throttle lock
Independent output for connecting external ESC (soldering required)

Size: 24.5 x 24 x 7.4mm (not including power leads)
Weight: 3.5g
Input voltage: 3.5~5.0V

Caution!  When binding or making adjustments to the servo and ESC functions, remove the propeller from the model to prevent injury or damage.

Binding instructions
With your transmitter off, power up the model.  After 10 seconds with no signal received, the receiver will enter binding mode automatically.  Binding mode is indicated by a change from a slow flash of the onboard LED light to a rapid blinking.  Once bind mode has been entered, quickly power on your transmitter and perform the binding function according to the instructions that came with your transmitter.  A successful bind will first cause the rapid blinking LED to return to a slow flash and then to a solid light – indicating that a signal from the transmitter is being received.

To prevent the receiver from entering bind mode, always power on your transmitter before powering on the model.  Should you forget and power on the model first and the receiver enters the binding function, simply power down the model and perform the proper power on sequence of transmitter first, then receiver.

Releasing the throttle lock function
The receiver features a throttle lock for the brushed speed controller.  When power is initially connected to the receiver, the output for the onboard ESC is locked.  To unlock and start the throttle, move the throttle stick to the lowest position – the red LED on the receiver will flash once, indicating the onboard ESC is unlocked.  If you experience difficulties with the receiver unlocking the throttle, this can indicate a problem with the receiver recognizing the lowest throttle stick position – this is often due to the throttle channel being reversed, or the throttle endpoint not being set low enough.  See your transmitter owner manual for guidance on how to adjust the low throttle endpoint and/or reverse the throttle channel.

Spektrum DX6i setup (to emulate PKZ3351/2 PKZU1151/2 receiver Stevens Aeromodel aircraft)

Swapping RX port assignments

  • From the Function List select System Setup
  • Confirm RF will be disabled YES
  • Scroll to Channel Assign and select
  • Scroll to ELEV and set to Rudder
  • Scroll to RUDD and set to Elevator
  • Exit back to main menu

For 3-Channel models only – mix rudder output to aileron

  • Enter the Function List and scroll to Mixing – select Mixing
  • Scroll to AIL > RUD
  • Set both Right and Left values to 100%
  • Set Switch from Inhibit to On
  • Exit back to main menu


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