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.

Specification
Item: ELRS Micro TX Module
Input voltage: 5V~7V
XT30 port: 5V~7V, recommend 2S(8.4V) battery, DO NOT support 3S(12.6V) or above
USB port: Type-C







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: About the temperature test, please read the article ELRS Micro Module Temperature.



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



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

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

Note: Please do not turn on all DIP switches at the same time. You can refer to the chart to know about DIP switches on/off based on different uses.



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.

https://github.com/BETAFPV/ExpressLRS

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

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