Skip to product information
1 of 2

BETAFPV ExpressLRS ELRS 2.4GHz 500mW Module

Regular price $79.00
Regular price Sale price $79.00
Sale Sold out

All items shipped next day


BETAFPV ExpressLRS ELRS 2.4GHz 868/915MHz Up To 500Hz Rate 500mW/1W Power OLED Screen Micro TX Module with Cooling Fan RGB LED for RC Drone


The USB port housing is 6.2*11mm and may not compatible with your own USB cables. So a spare USB data cable (Type-A to Type-C) is included in the package for all order since November 18.

For previous order, if you do not have a suitable USB cable for this Micro module, feel free to contact us. Email to


BETAFPV Micro RF TX module is based on the ExpressLRS project, an open-source RC link for RC applications. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. This makes ExpressLRS one of the fastest RC links available while still offering long-range performance.


Brand Name: BETAFPV

Item Name: ELRS Micro TX Module

Weight: 125g

Version: 2.4GHz/868MHz/915MHz (500mW)/2.4GHz (1W)

Packet refresh rate:

25Hz/50Hz/100Hz/200Hz (915MHz/868MHz)

50Hz/150Hz/250Hz/500Hz (2.4GHz)

RF output power:

25mW/50mW/100mW/250mW/500mW (2.4GHz)

100mW/250mW/500mW (915MHz/868MHz)

Frequency bands (Micro RF Module 2.4G version): 2.4GHz ISM

Frequency bands (Micro RF Module 915MHz/868MHz version): 915MHz FCC/868MHz EU

Input voltage: 5V~12V

XT30 port: 5V~12V, recommend 2S(8.4V) battery, DO NOT support 3S(12.6V) or above

USB port: Type-C


BETAFPV Micro RF TX module is compatible with radio transmitter which has the micro module bay (AKA JR/SLIM module bay, e.g. Frsky Taranis X9D?TBS Mambo).

ELRS 2.4G 1W Version:

The black version with maximum 1W RF output power is released now. Support all 5D button dimensions based on BETAFPV ELRS V2.0.0 firmware. A new backpack function is added, allowing wireless communication between ExpressLRS, and other FPV related devices for command and control, or for querying config.

Compared with 500mW versions, it not only builds in a cooling fan but also the heat sink is included, which enhances the performance of cooling. So this module can work properly in daily use and not need to worry about temperature.

Note: Please make sure the VRX also supports backpack function when using the module VRX-backpack function. Backpack function will be added to the 500mW version in the future.


Please assemble the antenna before power on. Otherwise, the PA chip in the Micro TX module will be damaged permanently.

Please DO NOT use 3S or above bettery to power up the TX module via XT30 port. Otherwise, the power supply chip in the TX module will be damaged permanently.

The antenna in the package is not the same as picture show for 915MHz and 868MHz version.

About the Firmware:

The ExpressLRS offical project on Github does NOT support the OLED function for the moment. BETAFPV team has made a pull request on Github and wait for the offical to finish this merge. We will work with the ELRS team and make the offical repository support the OLED and button function ASAP.

Please get the firmware from BETAFPV Github nowadays until ExpressLRS offical support.

User manual of How to Flash Firmware of ELRS RX/TX. Click Here

Button and OLED:

The ELRS TX module could be configured via the OpenTX LUA script. With OLED and button, no-OpenTX radio controller that supports CRSF could use this ELRS Micro module easily. The following no-OpenTX radio controllers work well with this TX module. Futabas T16IZ, T16SZ and T18SZ (with update to 3.9e), Wsky ET16, Radiolink AT9S Pro.

There is a 5D button on the micro module. Pay attention only the virtical dimention works and the other four dimentions are invalid. Below is the basic operation of the button and OLED.

Long Press:

In the lock screen page, long press to unlock and enter the menu page.

In the menu page, long press to change the value of this row.

Short Press:

In the lock screen page, short press invalidly.

In the menu page, short press to move to the next row.

Package Include:

1 x ELRS Micro TX module

1 x Moxon antenna

1 x User manual

1 x Spare USB data cable (Type-A to Type-C)


  • Free Shipping

    Spend $200 or more to receive free shipping within Australia*

  • Returns and Exchanges

    Purchased an item by mistake? We're happy to exchange it within 7 days. See T&Cs.