SKU: 72010446097

Spektrum SPM4650 DSMX SRXL2 Serial Micro Receiver V2

Sale price$37.79 Regular price$41.99
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Description

Spektrum SPM4650 DSMX SRXL2 Serial Micro Receiver V2The 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 our 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

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 our 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.

The SPM4650 is small, lightweight, and customizable, providing an excellent receiver for even the smallest of applications. 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 Micro Receiver provides remarkable range and interference free performance.

Check out the rest of our Receivers and Spektrum Products!

Features:

  • SRXL2 Technology
  • Small, Lightweight and Perfect for the DIY Enthusiast
  • Wide Voltage Input Range
  • Fly-By Telemetry
  • Dual Diversity Antennas
  • Bind Button installed for Easy Binding

SRXL2 Technology

The next iteration of Spektrum SRXL Technology * is here! SRXL2 Technology is a communication protocol between receivers and devices such as Multi rotor flight controllers, Helicopter Flybarless units and other receivers. SRXL2 is faster, more data rich, and more secure. It also allows for bi-directional telemetry support, giving users more access to telemetry features from their devices and even allowing setup and configuration right from their transmitter. No computer or smart device required! ** Want to learn more about SRXL2? Visit the SRXL2 Homepage.

* Please note that SRXL2 is not backward compatible with SRXL protocol.

** SRXL2 support updates are required for your device to use the SPM4650, visit www.srxl2.com for details and download links

Small, Lightweight, and Perfect for the DIY Enthusiast 

Weighing just 1.4 grams and smaller than any previous Spektrum serial receiver, the SPM4650 is ready to be installed in most types of multirotor and heli builds – no matter the space constraints. The receiver comes with the plug uninstalled for the enthusiasts looking to reduce weight and clutter. Simply attach leads directly to the PCB or mount the connector and plug the included wire from the SPM4650 into a compatible flight controller.

Wide Voltage Input Range

With an operating voltage range between 3.3v to 8.4v, users will no longer be constrained to which devices they can use to operate their serial receiver now that the limited voltage range is eliminated.

Dual Diversity Antennas

The SPM4650 employs an advanced antenna diversity system that provides optimal range, RF performance, and polarization. All supported by 2 long coaxial antennas that are perfect for FPV, Multirotor and Heli pilots with metal and carbon fiber abundant models.

Fly-By Telemetry

Fly-By Telemetry is a low range telemetry signal that is perfect for checking telemetry before and after a flight. And with SRXL2 Technology users will get even more telemetry data and transmitter to device programming support via Forward Programming, VTX Setup, and/or Text Gen Programming.

Bind Button installed for Easy Binding

No bind plug? No Problem! The SPM4650 is the most convenient to bind Spektrum serial receiver yet, simply press the bind button at any time, before or after power is applied, and the SPM4650 is in bind mode. And like other Spektrum serial receivers, users can also bind using a supported flight controller and computer, but now there is no need to power cycle!

Specifications:

  • Modulation: DSMX
  • Telemetry: Yes
  • Antenna Length: 3.9" (100mm)
  • Product Width: 0.51" (13mm)
  • Programmable: No
  • Product Length: 0.67" (17mm)
  • Product Weight: 0.05oz (1.4g) including antennas
  • Water-Resistant: No
  • Bind Method: Bind Button or SRXL2 Bind Command
  • Range: Full
  • Channels: 20
  • Data Port: Yes
  • Band: 2404 - 2476 MHz
  • Input Voltage: 3.3 - 8.4V
  • Product Height: 0.20" (5mm)

Package Includes:

  • 1 x Spektrum SPM4650 DSMX SRXL2 Serial Micro Receiver V2
  • 2 x U.FL Antenna
  • 1 x 6” Receiver Extension Cable
  • 1 x 4-Pin Connector
  • 1 x Product Manual
  • Clear Heat Shrink Wrap
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 72010446097

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Lillian
Lowell, US
★★★★★ 5
Refunded my purchase price
I purchased the "TESmart" 2 computer KVM Switch. I always get the added warranty these day for electronics and I am glad I did. It has now been 3 years and the unit has stopped working correctly. It would switch between computers but the mouse and keyboard stopped working for one of the computers. I'm not sure exactly which component stopped working because the keyboard and mouse worked fine for the other computer. I did plugged the mouse and keyboard directly to the computer in question and they worked fine. I believe the "push threw" stopped for my W11 computer, meanwhile, the W7 computer keeps trucking on. I say all that to say this, it's worth paying a few dollars more to get that little bit of extra security on the electronics these days. Unfortunately the prices have gone up on the KVM switches, at least the ones worth buying so I am in search of a new one now. ASURION was easy to work with. It wasn't that much of a hassle. The slight glitch I experienced was their automatic system didn't register my claim correctly. Only mistake I made was making the claim over a weekend. I would say if you make a claim do it during the normal business hours. I was able to chat with an agent during working hours and they were able to remedy the issue quickly. I did have to ship the KVM switch and its components to Asurion but they paid for shipping and once I was able to package and ship the unit back, Asurion refunded my purchase price completely with an Amazon Gift Card. So, all in all, it's all good!
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Reviewed in the United States on June 8, 2024
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John Byrd
Charlottesville, US
★★★★★ 5
Asurion Rocks!
Fantastic response. They did a great job of processing the claim. Money well spent! Great service and great protection plan.
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Reviewed in the United States on July 30, 2025
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PAUL MARIA
Draper, US
★★★★★ 5
Something good you should have
Something you should consider to have they were with you and give you your money back if there’s a problem
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Reviewed in the United States on February 15, 2026
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GUSTAVO Arriens
Bozeman, US
★★★★★ 5
Simple and not Drama claim process.
’ve had Asurion coverage for a couple of years and never needed to use it until recently, when my pool salt cell (less than two years old) stopped working. I had purchased it with an Asurion protection plan, so I contacted them to start a claim. The process was simple and straightforward to follow. In the end, they honored the plan and covered the cost of my salt cell based on the value when I originally bought it. They issued me a gift card that I could use on Amazon for that amount. While prices have gone up and a new cell now costs about $200 more, it was still definitely worth having the coverage. Overall, I’m satisfied with how the claim was handled.
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lele
Whiting, US
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Love this protection plan
Quick and easy. My daughter's cracked her screen on her phone, as soon as it happened I went on the app, filed the claim. Ten minutes later I received the email with the shipping lable. The following day I dropped the phone off at ups and 4 hours later I received the digital gift card. Ive filed several claims since getting the protection plan and with four kids its definitelysomething im glad to have especially since i dont have to buy a protectionplan for each item now. I have filed claims for electric scooter the stoped working for no reason, my son's phone stopped charging, my oldest daughter cracked her phone screen, my son's video game controllers up and died and each time it was quick and easy and no fuss
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Reviewed in the United States on May 13, 2026

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