MATEKSYS ELRS-R24-D 2.4GHz Receiver

Short Description:

MATEKSYS ELRS-R24-D is a 2.4GHz ExpressLRS diversity receiver with two IPEX MHF1 antennas, CRSF serial output and 4–9V DC input for FPV control links.

Product Name: MATEKSYS ELRS-R24-D 2.4GHz Receiver
Product Type: ExpressLRS Diversity RC Receiver
Frequency Range: 2400–2480 MHz
Antenna Diversity: Antenna-switching diversity; ANT2 selected by default
Telemetry Power: 22.5–23 dBm
Input Voltage: 4–9 V DC at the 5V pad
Control Protocol: ExpressLRS RF link; CRSF serial receiver protocol
PCB Size: 21 × 15 mm
Antenna Connector: 2 × IPEX MHF1
Weight: 3 g with two antennas

Send email to us

Product Detail

FAQ

Technical Highlights

2.4GHz ExpressLRS Control Receiver

The ELRS-R24-D operates from 2400 to 2480 MHz and provides a CRSF serial connection to a flight controller. It receives radio-control data; it does not transmit FPV video.

Dual-Antenna Switching Diversity

Two IPEX MHF1 antenna connectors support antenna-switching diversity. The manufacturer's specification identifies ANT2 as the default antenna selection.

Defined Telemetry Return Power

The receiver's specified telemetry transmission power is 22.5–23 dBm. This rating applies to the control link's telemetry return path, not to a video signal.

Compact PCB and Serial Wiring

The 21 × 15 mm PCB uses an ESP8285 MCU, an SX1280/1281 RF device and an SE2431L PA/LNA. With two antennas, the specified assembly weight is 3 g.

Technical Specifications

Model	MATEKSYS ELRS-R24-D
Device Type	2.4GHz ExpressLRS radio-control receiver
RF Frequency	2400–2480 MHz
MCU	ESP8285
RF Device	SX1280/1281IMLTRT
PA/LNA	SE2431L
Antenna System	Antenna-switching diversity; ANT2 selected by default
Antenna Connectors	2 × IPEX MHF1
Telemetry Power	22.5–23 dBm; telemetry return path only
Receiver Protocol	CRSF serial
Input Voltage	4–9 V DC at the pad marked 5V
PCB Size	21 × 15 mm
Weight	3 g with two antennas

Installation and Firmware Notes

Connect receiver TX to flight-controller UART RX for control data, and receiver RX to flight-controller UART TX for telemetry.
Connect receiver G to ground. The manufacturer specifies 4–9 V DC input at the pad marked 5V.
Attach both suitable 2.4GHz antennas to the IPEX MHF1 connectors before installation.
For ExpressLRS 3.x or newer, the manufacturer lists the firmware target as MATEK R24-D 2.4GHz RX. Verify the firmware already installed on the supplied unit before updating it.

FAQ

Does the ELRS-R24-D transmit FPV video?

No. It is an ExpressLRS radio-control receiver. Its 22.5–23 dBm power specification refers to telemetry transmission, not video transmission.

What kind of diversity does this receiver use?

It uses antenna-switching diversity with two external antenna connections. ANT2 is the manufacturer's stated default selection.

How should it be wired to a flight controller?

Connect receiver TX to flight-controller UART RX, receiver RX to UART TX, G to ground and the pad marked 5V to a suitable supply within the specified 4–9 V DC input range. Configure the receiver connection for CRSF.

Is the ELRS-R24-S the same product?

No. The ELRS-R24-D has two external IPEX MHF1 antenna connectors and antenna-switching diversity. The ELRS-R24-S is a different model with different antenna and RF specifications.