HappyModel EP1 2.4 Dual RX

HappyModel EP1 2.4 Dual RX is an ultra-compact and lightweight ExpressLRS radio receiver designed for use in FPV drones, racing quadcopters, airplanes, and other RC models where maximum link reliability, interference resistance, and minimal weight are essential.

Unlike standard single-antenna receivers, this model utilizes a True Diversity system, providing superior signal coverage behind obstacles, elimination of RF blind spots, and stable packet delivery. This is especially critical for aggressive freestyle and long-range flights.

The receiver is built around a reliable ESP8285 MCU and SX1280 RF module architecture, ensuring high refresh rates (up to 500 Hz) and ultra-low control latency.

Operating within a 4.0–5.5V power supply range, it supports convenient wireless firmware updates via Wi-Fi and ExpressLRS Configurator. Integrated IPEX MHF1 antenna connectors allow for quick and easy antenna replacements if damaged.

Weighing just around 1 g (excluding antennas) with micro dimensions, the receiver fits effortlessly into even the tightest Whoop and toothpick frames.

Key Specifications:

• Model: HappyModel EP1 2.4 Dual RX

• Type: ExpressLRS Receiver (True Diversity RX)

• MCU: ESP8285

• RF Chip: Semtech SX1280D

• Frequency Band: 2.4 GHz (2400–2480 MHz)

• Packet Rate: 25 Hz to 500 Hz

• Power Supply: 4.0 – 5.5V DC

• Output Protocol: CRSF (Crossfire serial)

• Antenna Connectors: IPEX MHF1 (2 pcs with antennas included)

• Firmware Updates: Via Wi-Fi or Betaflight Passthrough

• Weight: ≈ 1.0 g (without antennas)

• Dimensions: ≈ 19 × 14 × 3 mm