Review: BetaFPV ExpressLRS Nano TX Module and RX

by Oscar
Betafpv Expresslrs Nano Tx Module And Rx 2.4ghz 868mhz 915mhz

BetaFPV released their version of the ExpressLRS Nano TX module and receivers. BetaFPV ELRS Nano offers both 2.4GHz and 868/915MHz options. In this review we will check out its features and how to set it up.

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If you don’t already know what ExpressLRS is, you should check out my introduction here. It’s basically an affordable RC system that offers some of the best performance in terms of range and update rate.

Where to Buy?

The 2.4GHz and 900MHz modules look identical from the outside, so double check when you buy it.



Specs and Features

The BetaFPV ELRS Nano TX Module is designed for nano size module bay. It fits perfectly in smaller radios such as the Jumper T-lite, Frsky X-Lite and TBS Tango 2. However BetaFPV also offer a adapter so you can use this module in bigger radios with standard JR module bay, such as the Radiomaster TX16S and Frsky X9D-Plus.

Betafpv Expresslrs Nano Tx Module Jr Bay Tx16s

Get this Nano to JR module adapter here (the case was 3D printed by myself):

Betafpv Expresslrs Nano Tx Module Full Size Jr Adapter

One advantage of the BetaFPV ELRS Nano TX is the maximum 500mW output power, the Happymodel TX module can only do up to 250mW (with a cooling fan added). Although it doesn’t have a fan for cooling, the built-in heatsink should still help.

Betafpv Expresslrs Nano Rx Close Up

One downside of the BetaFPV ELRS Nano receiver is the size, it’s considerably larger and heavier than the Happymodel’s. With antenna mounted, the BetaFPV weighs 1.8g while the Happymodel PP only weighs 0.5g.

Betafpv Expresslrs Nano Rx Size Compare Happymodel Pp

Left: BetaFPV ELRS Nano RX; Right: Happymodel ELRS PP RX

Compatible with other TX and RX?


You can use BetaFPV’s ELRS Nano TX and RX with hardware from other brands as long as they are also running ExpressLRS. For example, you can bind the Happymodel PP, EP1 and EP2 receiver to the BetaFPV ELRS Nano TX. You can also bind the BetaFPV RX to Happymodel TX.

2.4GHz or 900MHz?

As I mentioned in my ExpressLRS introduction, I recommend 2.4GHz. 2.4GHz gives enough range for most people and it supports 500Hz update rate (900MHz only does 250Hz at the moment), and it has wider bandwidth that allows more people to fly at the same time. Antenna is also much smaller with 2.4GHz.

If all you want is range and signal penetration, and you don’t care about the advantages mentioned, then go with 868/915MHz.

Betafpv Expresslrs Nano Tx Module And Rx 2.4ghz 868mhz 915mhz

How to Setup BetaFPV ELRS Nano

I have a tutorial taking you step by step how to setup ExpressLRS for the first time.

The guide was originally written for the Happymodel TX module and RX (because they were the first to release the hardware), but the steps are identical for other hardware, including the BetaFPV ELRS Nano.

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Kai 12th January 2024 - 7:38 am

Hi Oscar,
can you tell me what voltage regulator is used on the Nano? I seem to have destroyed mine and I am looking for a replacement part. A part marking or a close up picture of the chip would be helpfull as well…
Thanks, Kai

Jackson Danner 21st August 2023 - 2:06 pm

Can you use the same module for both 2.4ghz and 915mhz with a simple flash and antenna swap?

Oscar 21st August 2023 - 4:49 pm

No, the hardware between 2.4 and 915 are different.

Kyaw thet naing 1st January 2022 - 9:59 pm

hello, how can i bind betafpv micro tx 900mhz and 900 RX jhemcu receiver ? i connect fc to receiver which always led show solid blue light but it is not connect with my radio. why? i need helps.thanks

Tom 7th November 2021 - 6:57 pm

Beta TX have(had?) HW problems with flashing firmware. Is this mistake fixed, or is still here?

Max 1st November 2021 - 4:55 pm

Is there any benefit for the larger receiver compared to Happymodel?

Juan 31st August 2021 - 4:24 pm

Does this module really works on the Jumper T-Lite? I think the jumper needs some modifications out of the box. The happymodel brings an extra module you need to connect to make this happen, which the betafpv doesn’t.

Ricky 7th October 2021 - 2:47 pm

Hi Juan, the 915mhz Betafpv ELRS nano module worked for me without any modifications on the jumper T Lite with the stock bay!