ExpressLRS 900RX Open Source ELRS Receiver 915M/868M High Refresh Rate, Ultra-Small UART CRSF, IPEX-1

Overview

This ExpressLRS 900RX is an open source ELRS serial receiver designed for 915M/868M systems, featuring a high refresh rate design in an ultra-small receiver module format. It uses a UART connection to the flight controller and supports CRSF-style serial receiver configuration.

Key Features

• ExpressLRS (ELRS) 900RX open source receiver
• 915M / 868M band (as stated in the product title)
• IPEX-1 antenna connector
• UART pads for RX/TX plus power and ground

Specifications

Wiring & Setup Notes

• Connect the receiver to a flight controller UART using the labeled pads: RXD, TXD, +5V, and GND.
• In Betaflight, enable Serial RX on the UART used for the receiver (the example screen shows UART1).
• Set Receiver Mode to Serial-based receiver and set Serial Receiver Provider to CRSF.

What's Included

• ExpressLRS 900RX receiver module
• IPEX-1 antenna (T-style)
• Wire lead (as shown)

For pre-purchase compatibility questions or setup help, contact support at https://rcdrone.top/ or email [email protected].

Details

Includes the 900RX receiver module, IPEX-1 T-style antenna, and a wire lead for quick UART hookup.

At just 0.6 g for the receiver board, it’s a solid fit for lightweight FPV builds.

Solder RXD, TXD, +5V, and GND to a free flight controller UART, then connect the antenna to the IPEX-1 socket.