--- product_id: 145186827 title: "SRXL2 DSMX Serial Micro Receiver, SPM4650" price: "€ 72.89" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.be/products/145186827-srxl2-dsmx-serial-micro-receiver-spm4650 store_origin: BE region: Belgium --- # SRXL2 DSMX protocol for enhanced telemetry 5V power support for stable performance Compact micro size for sleek builds SRXL2 DSMX Serial Micro Receiver, SPM4650 **Price:** € 72.89 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your micro quad game with Spektrum’s powerhouse receiver! ## Quick Answers - **What is this?** SRXL2 DSMX Serial Micro Receiver, SPM4650 - **How much does it cost?** € 72.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/145186827-srxl2-dsmx-serial-micro-receiver-spm4650) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** Ultra-small micro receiver designed to fit seamlessly into tight builds without compromising range or signal quality. - • **Power Up with 5V Stability:** Runs on 3.3 to 8 volts, ensuring robust and reliable power delivery for your micro quad setup. - • **Next-Level Telemetry Control:** Leverage SRXL2 DSMX protocol to adjust Betaflight settings directly from your Spektrum Gen 2 radio—no more OSD hassle. - • **Plug-and-Play with Smart Bind:** Integrated bind button eliminates the need for bind plugs or grounding, simplifying setup and saving time. - • **Engineered for the Spektrum Loyalist:** Optimized for pilots who demand precision and seamless integration with Spektrum’s ecosystem—join the elite few. ## Overview The Spektrum SRXL2 DSMX Serial Micro Receiver (SPM4650) is a compact, high-performance receiver designed for mini quad pilots who demand reliable 5V power support, advanced telemetry via SRXL2 protocol, and seamless integration with Spektrum Gen 2 radios. Featuring a built-in bind button and compatibility with Betaflight 4.1+, it offers enhanced range and control in a sleek micro form factor favored by serious Spektrum enthusiasts. ## Description Drivers and pilots enjoy even more Smart advantages when using Spektrum Smart G2 50C LiPo batteries. New "Generation 2" features make these powerful LiPo packs even simpler and safer to use together with your Smart charger. Review: Finally, Spektrum Steps UP with a 5V Receiver - Coming from fixed-wing aircraft, I've owned a DX9 for quite some time and I wasn't yet ready to jump on the FrSky/Taranis bandwagon just to fly drones. My first quad was a Blade Torrent (great for learning). My recent second, a Diatone GT R349 (great for ripping). I installed this receiver onto the R349 and it is absolutely fantastic (great range, no noise). I do not recommend this to those who are not technically inclined; nor to those who aren't familiar with fine soldering work. It requires flashing a forked version of Betaflight (v4.0.3 as of this writing) onto the flight controller and soldering the output wires to the flight controller's 5V, GND, and (signal to) TX UART connection. You will be setting up Betaflight from scratch (or importing from a stock 4.0 setup and then tuning). Intimidated yet? Search the RCGroups threads for SPM4650 and get educated. It's worth it though -- if you own any Spektrum Gen 2 radio (and flash it with the latest firmware), you'll get the ability to change your Betaflight settings right in the pit via the radio's telemetry screens (thank you Spektrum devs!) -- an alternative from setting things via OSD (of course, your drone hardware needs to support Smart Audio/IRC Tramp). To sum up, it's a small, powerful, feature-rich, telemetry receiver we few die-hard Spektrum fans (the few, the proud) can now utilize for our micro builds. Better late than never! Review: Best for Mini Quads - This is the best spektrum rx for Mini quads. Make sure your flight controller supports betaflight 4.1 or higher or else it won't support the SRXL2 protocol. The receiver can run 3.3 to 8 volts, which is a huge upgrade from other spektrum receivers. No need for a bind plug or grounding anymore either because this component comes with a bind button. Spektrum DSMX protocol doesn't have the greatest range but this receiver has better range compared to my other rx. ## Features - Spektrum Srxl2 Dsmx Serial Micro Receiver, Spm4650 - Brand: Spektrum - Package Height: 1.4 Inches - Item Package Weight: 0.05 Pounds ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #180,898 in Toys & Games ( See Top 100 in Toys & Games ) #162 in RC Radio Receivers | | Customer Reviews | 4.6 out of 5 stars 255 Reviews | ## Images ![SRXL2 DSMX Serial Micro Receiver, SPM4650 - Image 1](https://m.media-amazon.com/images/I/61dBAEdxecL.jpg) ## Questions & Answers **Q: What do i have to use with it to be able to connect my servos with jr plugs??** A: You can not connect servos directly to this receiver. You need to use it with a flight controller. **Q: How do i hook this up to matek f411-wing? i don't see anything labeled tx uart** A: Don't look for pads specifically labeled "TX Uart". Many flight controllers will have multiple UARTs available and each UART consists of two pads... a TX pad and an RX pad. Flight controllers will typically label the pads associated with UART1 as TX1 and RX1. The pads associated with UART2 will be labeled as TX2 and RX2. If you are trying to connect this to UART1, you will need to solder the receiver's signal wire to a TX1 pad. However, your flight controller's firmware will also need to support the SRXL2 protocol. **Q: Is tbe signal ppm or subs when hooking to fc??** A: Neither. It is srxl2 protocol developed by spektrum and supported in newer versions of betaflight. **Q: I have a thrust riot. Recommend is 1024 or 2048 receiver. Cant find. What is recommended to replace 1024 or 2048?** A: Thats spektrum receiver is a 2048 receiver...buy that and setup in betaflight. They work great....i have them in 2 quads. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Finally, Spektrum Steps UP with a 5V Receiver *by C***S on September 17, 2019* Coming from fixed-wing aircraft, I've owned a DX9 for quite some time and I wasn't yet ready to jump on the FrSky/Taranis bandwagon just to fly drones. My first quad was a Blade Torrent (great for learning). My recent second, a Diatone GT R349 (great for ripping). I installed this receiver onto the R349 and it is absolutely fantastic (great range, no noise). I do not recommend this to those who are not technically inclined; nor to those who aren't familiar with fine soldering work. It requires flashing a forked version of Betaflight (v4.0.3 as of this writing) onto the flight controller and soldering the output wires to the flight controller's 5V, GND, and (signal to) TX UART connection. You will be setting up Betaflight from scratch (or importing from a stock 4.0 setup and then tuning). Intimidated yet? Search the RCGroups threads for SPM4650 and get educated. It's worth it though -- if you own any Spektrum Gen 2 radio (and flash it with the latest firmware), you'll get the ability to change your Betaflight settings right in the pit via the radio's telemetry screens (thank you Spektrum devs!) -- an alternative from setting things via OSD (of course, your drone hardware needs to support Smart Audio/IRC Tramp). To sum up, it's a small, powerful, feature-rich, telemetry receiver we few die-hard Spektrum fans (the few, the proud) can now utilize for our micro builds. Better late than never! ### ⭐⭐⭐⭐⭐ Best for Mini Quads *by A***N on March 21, 2022* This is the best spektrum rx for Mini quads. Make sure your flight controller supports betaflight 4.1 or higher or else it won't support the SRXL2 protocol. The receiver can run 3.3 to 8 volts, which is a huge upgrade from other spektrum receivers. No need for a bind plug or grounding anymore either because this component comes with a bind button. Spektrum DSMX protocol doesn't have the greatest range but this receiver has better range compared to my other rx. ### ⭐⭐⭐⭐ Its ok, needs a redesign and silicone wire. Tinyhawk Freestyle 2 *by P***R on March 15, 2021* Installed on a Tinyhawk 2 Freestyle. Please connect signal to TX1 pad, it will not work on TX2 as that is reserved for smartaudio. Shortened antennas, please do not do this mod unless you have spare antennas, it takes practice and a sharp 22awg stripper. Remember to make the unshielded portion the same length as the original antennas. Likes: - Provides TX link RSSI value via telemetry. This signal strength value can be displayed in the OSD via betaflight. Nice for long range flights. -Diversity antenna. -Can access betaflight settings from within the spektrum controller with the same options as smart audio when viewing fpv. I prefer this method over using goggles to view. Dislikes: - To thick. By having the bind button on the same side of the antenna it could have saved a few millimeters and gave a flat mounting surface. Before Spektrum takes my advice, please remember to also place the led on the same side of your redesign. Bet they would have forgot. - Comes with PVC jacketed wire instead of silicone.. WTF SPEKTRUM, ever soldered pvc wire, it sucks? I used my own silicone wire, but heck, use some decent wire already. - Spektrum needs to update their awkward installation video, its horribly outdated. - Range, i had issues with lost rx when flying around my house, literally drops to the ground. Also telemetry is lost at 150 feet although I still have full control. After contacting Horizonhobby they will replacing the receiver. I will update this review after installing and flying the new receiver. In conclusion, if you do not need rssi or have a limited space, the betafpv fullspeed dsmx nano receiver is smaller and half the price. It fits much better than the spektrum in small builds and has fantastic range. I use betafpv in tinyhawk 1 and 2. I dont think this Spektrum would have fit in those models. ## Frequently Bought Together - Spektrum SRXL2 DSMX Serial Micro Receiver, SPM4650 - SpeedyBee TX Ultra FPV VTX: TX1600 FPV Video Transmitter with Max 1.6W 7g 20 * 20mm Mounting Hole IRC Tramp & Pit Supported with MMCX Antenna for Analog FPV - FPV Camera RunCam Phoenix 2 SE - Special Edition Micro Drone Camera With lens hood 5.8ghz FOV160°Global WDR 8.6g for RC FPV Car Plane Racing Drone --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/145186827-srxl2-dsmx-serial-micro-receiver-spm4650](https://www.desertcart.be/products/145186827-srxl2-dsmx-serial-micro-receiver-spm4650) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-03*