Happymodel EP1 TCXO ExpressLRS 2.4GHz Receiver – Ultra Lightweight

Tiny size. Big performance.

The Happymodel EP1 TCXO is one of the most popular ExpressLRS 2.4 GHz receivers for micro quads and whoops. Now upgraded with a temperature compensated crystal oscillator (TCXO), it delivers rock-solid signal stability and excellent frequency accuracy, even in extreme hot or cold conditions. At only 0.41 g, the EP1 is one of the lightest ELRS receivers available, making it perfect for racing micros, and ultralight freestyle builds.

Why Pilots Love It

• TCXO stability — reliable link even in changing temperatures.
• Ultra-compact — just 10×10×6 mm, fits in any micro build.
• Lightweight — only 0.41 g without antenna.
• Fast refresh rates — from 25 Hz up to 500 Hz.
• ExpressLRS open source — flexible firmware updates via ELRS configurator.

Quick Specs

• Type: ISM 2.4 GHz receiver
• MCU: ESP8285
• RF Module: SX1280 (SX1281) IMLTRT
• Frequency Range: 2400–2500 MHz
• Refresh Rate: 25 Hz–500 Hz
• Voltage: 5 V
• Weight: 0.41 g (without antenna)
• Dimensions: 10 × 10 × 6 mm
• Antenna: Omnidirectional
• Peak Gain: 2.23 dB
• Firmware (default): Happymodel_EP_2400_RX v3.0.1
• Special Feature: Built-in TCXO for frequency stability

What’s in the Box

• 1 × Happymodel EP1 TCXO ExpressLRS 2.4 GHz Receiver
• 1 × Antenna

In short: The Happymodel EP1 TCXO is the ultimate lightweight ELRS receiver for micro quads. With its tiny footprint, low weight, and stable TCXO performance, it’s the go-to choice for racers and ultralight builds.