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The SPM4651T DSMX SRXL2 Serial Micro Receiver can supply up to 20 channels to a compatible Flight Controller. Perfect for Multirotor, FPV and Helicopter models. Upgraded hardware allows greater Telemetry functionality and longer range than ever before.


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SRXL2 DSMX Remote Serial Telemetry Receiver
  • Overview
  • Specs
  • Parts & Accessories
  • Manuals & Support


  • SRXL2 Technology
  • Low Noise Amplifier - Helps Reduce Interference and Produce Extended Control Link Range
  • Small, Lightweight and Perfect for Heli, Multi-Rotor and FPV Enthusiasts
  • Wide Voltage Input Range (3.3v -8.4v)
  • Full Range Telemetry
  • Dual Diversity Antennas
  • Bind Button for Easy Binding - No Plug Required


The SPM4651T DSMX SRXL2 Serial Micro Receiver takes the original SPM4649T receiver and adds more value, functionality, longer control and telemetry link range. The SPM4651T uses our feature-rich SRXL2 protocol to give pilots a blazing fast serial data connection with up to 20 channels. SRXL2 is a powerful and open source communication protocol developed by Spektrum. It greatly 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.

The SPM4651T is small, lightweight, and ideal for Heli, Multi-Rotor and FPV Enthusiasts. It also features a simple bind button so pilots no longer need to carry a separate receiver or bind plug to bind. Dual antennas provide receiver diversity for solid signal and the long coax antennas help to provide maximum signal strength in all orientations for challenging installations where carbon fiber, metal and batteries shield the antenna. And with Spektrum DSMX 2.4GHz RF protocol the Spektrum SRXL2 Serial Telemetry Receiver provides remarkable range and interference free performance.

Compatible Products

Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver SPM4651T is compatible with BLH5250, BLH5900, BLH5950, SPMFCF400RX
Antenna Length: 3.9" (100mm)
Band: 2.4GHz
Bind Method: Bind Button
Channels: 20
Failsafe: No
Governor: No
Height: 0.31" (7.8mm)
Input Voltage: 3.3 - 8.4V
Length: 1.1" (28.8mm),Length of antenna 3.9" (100mm)
Modulation: DSMX
Number of Receivers: One
Programmable: Yes
Range: Full
Rev Limiter: No
Technology: Smart Technology
Telemetry: Integrated
Water-Resistant: No
Weight: 0.14oz (4g)
Width: 0.71" (18mm)

Parts Listing

GBP 6.99
This item is no longer available

Optional Accessories

GBP 24.99
This item is no longer available
GBP 21.84
This item is no longer available
GBP 28.49
Out of Stock



Product Support Tips

Product Support

Product Support & Service

Technical questions about this product should be directed to Horizon Hobby:

Horizon Hobby GmbH
Hanskampring 9
D-22885 Barsbuettel

US Product Support:
Mo - Fr: 2:00pm - 9:00pm (UK Time zone hours of operation)
English: +44 (0) 127 929 7061

Europe Customer Service & Tech Support:
Mo - Fr: 8:00am - 4:00pm
English: +44 (0) 127 929 7061
German: +49 (0) 40-822167800
French: +33 (0) 7 822 63 500

To contact Tech Support email us at service[at]

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