JHEMCU 900RX 915MHz ELRS Receiver

When the distance gets long and the obstacles get thick, the JHEMCU 900RX shines. Operating on the 915MHz (FCC) band, this receiver offers inherently better signal penetration through trees, walls, and terrain compared to standard 2.4GHz systems.

Built with the SX1276 RF chip and an ESP8285 MCU, this receiver brings the best of both worlds: extreme range and the ultra-low latency of the ExpressLRS protocol. Despite its tiny 11x18mm frame, it supports high refresh rates up to 500Hz, ensuring your drone responds instantly to every stick movement.

Key Performance Highlights:

• 915MHz Long-Range Advantage: Superior penetration and range compared to 2.4GHz, making it the go-to for “Long Range” (LR) missions.

• Ultra-Lightweight Engineering: At only 0.6g, it allows you to add long-range capabilities to even the smallest micro-drones without affecting flight performance.

• Modern Protocol Support: Fully compatible with CRSF (Crossfire) protocols, ensuring easy setup with Betaflight, INAV, and Ardupilot.

• Wireless Maintenance: Features built-in Wi-Fi, allowing you to flash firmware updates and change binding phrases wirelessly—no need to access the flight controller’s internal ports.

• Visual Diagnostics: The onboard LED provides clear feedback for binding status, signal health, and Wi-Fi mode.

LED Status Guide:

• Double Flash: Binding Mode (Ready to pair).

• Slow Flash: No Signal (Transmitter is off or incorrect protocol).

• Solid On: Successfully Bound (Ready for take-off).

• Rapid Flash: Wi-Fi Upgrade Mode (Access via phone/PC).

Technical Specifications:

• Protocol: ExpressLRS (ELRS)

• Frequency: 915MHz (FCC)

• MCU: ESP8285

• RF Chip: SX1276

• Input Voltage: 5V

• Max Refresh Rate: 500Hz

• Min Refresh Rate: 25Hz

• Weight: 0.6g (Without antenna)

• Dimensions: 11mm x 18mm x 3mm