BETAFPV ELRS 2.4GHz ExpressLRS Micro TX Module 500Hz 500mW OLED Micro TX Screen Cooling Fan RGB LED for RC Drone Radio

Specification - Item: ELRS Micro TX Module
- 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
2.4GHz 1W 2.4GHz 500mW
915/868 MHz 500mW
Packet refresh rate
50Hz, 150Hz, 250Hz, 500Hz
50Hz, 150Hz, 250Hz, 500Hz
25Hz, 50Hz, 100Hz, 200Hz

RF output power
25mW, 50mW, 250mW, 500mW, 1W
25mW, 50mW, 250mW, 500mW
100mW, 250mW, 500mW

Frequency bands
2.4GHz ISM
2.4GHz ISM
915MHz FCC 868MHz EU

Heat sink Included Not included Not included
Backpack Function Support Not support currently Not support currently

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.




1W Limited Edition

Diagram
Below is the diagram for ELRS 2.4G 1W version. DIP switches will be added to 500mW versions in the future.


1-2 DIP switches 3-4 DIP switches 5-6-7 DIP switches
Update Firmware ON OFF OFF
Operating Mode OFF ON OFF
Update Backpack OFF OFF ON

About the Firmware The ExpressLRS official project on Github does NOT support the OLED function for the moment. BETAFPV team will work with the ELRS team and make the official repository support the OLED and button function ASAP.
BETAFPV Micro TX Module ELRS V2.0.0 firmware is published. The firmware does not include the Binding Phrase. So please make sure the receiver works on officially major release V2.0.0 protocol and no Binding Phrase set.
- Support 5D buttons and the OLED menu with the official ELRS 2.0.0 release.
- The color of the LED changes automatically according to the system status.
- Other new and various features are fully synchronized with the official ELRS 2.0.0.
- When entering OLED menus page with long pressing, the connection between RF TX module and receiver works normally. Please do not change the Pkt Rate, otherwise, you must re-power the receiver.
User manual of How to Flash Firmware of ELRS RX/TX.
How do I set a binding phrase on this Micro TX module when the ELRS official mainstream does not support OLED yet?
First, download the source code of master-betafpv-oled-menu branch to local from Github.
Short Press:
In the lock screen page, short press invalidly.
In the menu page, short press to move to the next row.

Note: When the RF TX module is entering menus page, the connection between RF TX module and receiver will be lost, the connection will recover after exiting menus page automatically; you must re-power the receiver if you have changed the Pkt Rate.
Note: When the RF TX module enters WIFI Upgrade status, the button will be invalid. Please re-power the RF TX module after firmware update via WIFI.

Below is the basic operation of the button and OLED for BETAFPV ELRS V2.0.0 firmware.

Long Press: Unlock and enter the menu page, or apply current settings in the menu page.
Up/Down: Move to the last/next row.
Left/Right: Change the value of this row.
Short Press: Enable binding status or WiFi upgrade status.

Note: You must re-power the receiver if you have changed the Pkt Rate.
Note: When the RF TX module enters WIFI Upgrade status, the button will be invalid. Please re-power the RF TX module after firmware update via WIFI.



ExpressLRS use the OpenTX LUA script to control the TX module, like bind or setup. With the LUA script, pilots could check, and set up some configurations of the Nano RF TX module. For more details, please check the Support Page.
- Save the ELRS.lua/ELRSV2.lua script files onto the radio transmitter's SD Card in the Scripts/Tools folder;
- Long press the "SYS" button (for RadioMaster T16 or similar radios) or the "Menu" button (for Frsky Taranis X9D or similar radios) to access the Tools Menu where you can find ELRS/ELRSV2.lua script ready to run with only one click;
- Below image shows the LUA script run successfully;
ELRS.lua script

ELRSV2.lua script



Note: The LED will NOT flash when entering binding status. The module will exit from binding status 5 seconds later auto. Short and consecutive press 3 times to bind.
ELRSV2.lua script




Note: The RGB LED will NOT change according to the output power. When the output power is 250mW or above, the fan will spin automatically. The Micro RF TX module does NOT support 1W or 2W output. When switching to this value, the system will move to 500mW automatically.
ELRSV2.lua script


FAQ BETAFPV ELRS Micro TX module user manual download.
Package - 1 * BETAFPV ELRS Micro TX module
- 1 * BETAFPV Moxon antenna
- 1 * Micro TX module user manual
- 1 * Spare USB data cable (Type-A to Type-C)
The antenna in the package is not the same as shown below for 915MHz and 868MHz version.