Spektrum SPM4650 DSMX SRXL2 Micro Receiver

Regular price $26.99

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The SPM4650 DSMX SRXL2 Serial Micro Receiver takes the original SPM4648 receiver and adds more value, functionality and fly-by telemetry while decreasing the size and weight of the already micro-sized Spektrum serial receiver. The SPM4650 uses Spektrum's feature-rich SRXL2 protocol to give pilots a blazing fast serial data connection with up to 20 channels. SRXL2 is a powerful communication protocol that improves bi-directional communication between the radio system and flight controller for added telemetry functionality and flight control configuration right from the pilots Spektrum Transmitter*, all over one signal wire.

Antenna Length: 3.9" (100mm)
Band: 2404 - 2476 MHz
Bind Method: Bind Button or SRXL2 Bind Command
Channels: 20
Data Port: Yes
Height: 0.20" (5mm)
Input Voltage: 3.3 - 8.4V
Length: 0.67" (17mm)
Modulation: DSMX/DSM2
Number of Receivers: One
Range: Full
Telemetry: Fly By
Type: SRXL2
Water-Resistant: No
Weight: 0.05oz (1.4g) including antennas

0.51" (13mm)


Required cli settings

Note: Betaflight 4.1 and the latest configurator supports SRXL2 so there are no CLI commands needed!

feature -RSSI_ADC
feature RX_SERIAL
map TAER1234
set rssi_channel = 0
set serialrx_provider = SRXL2
set serialrx_inverted = OFF
set srxl2_unit_id = 1
set srxl2_baud_fast = ON

What's in the Box?

  • (1) SPM4650 Receiver
  • (2) U.FL Antenna
  • (1) 6” Receiver Extension Cable
  • (1) 4-Pin Connector
  • (1) Product Manual
  • Clear Heat Shrink Wrap

Click here for Manual
Github Page



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