ELRS control receiver based on Semtech LR1121 chip
Compact high-performance receiver designed for stable and flexible control over a wide frequency range. Equipped with a modern Semtech LR1121 RF chip, it provides reliable communication in the 150-1000 MHz and 1000-3000 MHz bands, making it a versatile solution for a wide range of applications.

• Key features:
  • Frequency range: 150-1000 MHz / 1000-3000 MHz
  • RF chip: Semtech LR1121
  • Telemetry power: up to 100 mW
  • Microcontroller: ESP32-C3
  • Firmware download: via Wi-Fi or UART
  • Number of antennas: up to 4
  • Dimensions: 10 × 10 × 3 mm
  • Weight: ~0.5 g

Despite its miniature form factor, the receiver supports up to 4 antennas, which allows for optimized reception quality and stable communication even in difficult radio environments.

Thanks to the built-in Wi-Fi interface, firmware updates are quick and convenient – without connecting to a programmer.

This module is the choice of engineers who value integration, reliability, and control.

Frequency range: 150 MHz to 1000 MHz / 1000 MHz to 3000 MHz
RF chip: Semtech LR1121
Power: up to 100mW
Weight: 0.5 approx
Up to 4 antennas: can be installed
Size: 10mm*10mm*3mm
Firmware Download: Wi-Fi
Microcontroller: ESP32-C3