Darwin Vantac ExpressLRS ELRS 2.4GHz Lite TX Module (CRSF) with WiFi Firmware Update, USB-C

Overview

Darwin Vantac ELRS 2.4G Lite TX Module (TX Module) is an ExpressLRS-based 2.4GHz ISM radio transmitter module designed for remotes with a lite-style module bay. It includes built-in WiFi for wireless firmware upgrades and communicates with compatible radios using the Crossfire serial protocol (CRSF).

Key Features

• ExpressLRS 2.4GHz ISM TX module for speed/latency/range-focused RC control links
• Built-in WiFi for wireless firmware upgrades
• CRSF serial protocol support (External RF set to CRSF in OpenTX/EdgeTX-style systems)
• USB Type-C port
• Hardware labels: RF antenna, heat sink, LED, USB Type-C
• Pin labels: CRSF serial port, GND, 5V-12V, NC

Specifications

Compatibility

• Module bay: lite-style TX module bay
• Radio protocol: CRSF (radio must support CRSF serial protocol)
• Confirmed compatible radios: Jumper T-lite, BETAFPV LiteRadio 3, TBS Tango 2, FrSky Taranis X9 Lite, FrSky Taranis X-Lite

Firmware & Setup Notes

• Firmware can be upgraded via WiFi or via ExpressLRS Configurator. When upgrading with ExpressLRS Configurator, use the specified firmware file: ExpressLRS-vantac-2.0.rar.
• TX module and receiver must run the same ELRS version to bind successfully.
• OpenTX model setup guidance: turn off “Internal RF”, enable “External RF”, set protocol to “CRSF”.
• LUA control: copy elrsV2.lua to \SCRIPTS\TOOLS\ on the radio SD card; launch it from the radio tools menu. The script provides menu items such as Packet Rate, Telem Ratio, Switch Mode, Model Match, TX Power, WiFi Connectivity, and a [Bind] function.

Attention

• When entering binding mode or switching configuration, the LED light does not provide prompt indications.
• Install the antenna before use; otherwise the PA chip in the TX module may be permanently damaged.

Manuals / Documents

• ExpressLRS releases: https://github.com/ExpressLRS/ExpressLRS/releases
• ELRS TX module and receiver binding tutorial: https://darwinfpv.com/pages/elrs-tx-model-and-receiver-pairing

For compatibility questions or firmware help, contact support at https://rcdrone.top/ or email support@rcdrone.top.

Details

USB‑C and built‑in WiFi make firmware updates simple, while the lite-module form factor fits compatible radio bays.

In your model settings, disable Internal RF and set External RF to CRSF to communicate with the module.

The ExpressLRS LUA script lets you adjust packet rate, telemetry ratio, switch mode, model match, and output power from the radio.

Use the tools menu to enter WiFi connectivity for updates or select Bind when pairing to an ELRS receiver on the same firmware version.