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AirWave ER4 installed in small RC boat setup with visible high-sensitivity antenna
ExpressLRS receiver integrated into miniature aircraft model showing servo channels
Top-down view of AirWave ER4 PWM receiver showing compact form factor for fixed-wing RC models
AirWave ER4 installed in small RC boat setup with visible high-sensitivity antenna
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AirWave ER4 ExpressLRS 2.4GHz PWM Receiver for RC Boats & Fixed-Wing Models

Original price was: $14.99.Current price is: $7.50.

-50%

Compact PWM receiver with ExpressLRS protocol – ideal for fixed-wing aircraft and RC boat setups.

(3 customer reviews)

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Top-down view of AirWave ER4 PWM receiver showing compact form factor for fixed-wing RC models
AirWave ER4 ExpressLRS 2.4GHz PWM Receiver for RC Boats & Fixed-Wing Models
$14.99 Original price was: $14.99.$7.50Current price is: $7.50.

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The AirWave ER4 is a next-generation PWM receiver built on the cutting-edge ExpressLRS system, designed for high-performance RC applications. Whether you’re fine-tuning a mini jet or upgrading your marine rig, this receiver delivers exceptional precision and long-range control.

  • Supports 4-channel PWM output for servo flexibility
  • Perfect fit for small aircraft models, compact RC boats, and car builds
  • Includes voltage telemetry and high-sensitivity 15cm antenna
  • Firmware-ready with ExpressLRS 3.3.0 and Wi-Fi update capabilities

Wondering how to use it? Simply connect to your flight or boat controller, configure via WEBUI, and enjoy real-time control and feedback.

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3 reviews for AirWave ER4 ExpressLRS 2.4GHz PWM Receiver for RC Boats & Fixed-Wing Models

  1. Norma Burns (verified owner) –

    Works flawlessly in my micro jet. Setup was a breeze with WEBUI, and range is impressive.

  2. Troy Fields (verified owner) –

    Exactly what I needed for my RC boat. The signal holds steady even at long distances. Great ExpressLRS performance.

  3. Todd Cruz (verified owner) –

    Reliable and compact! I bought this as a cheap 2.4GHz receiver for boats and cars, but the quality is way above its price.

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FAQs

How to use the ExpressLRS 2.4GHz receiver for RC boats?
Connect the ER4 to your RC boat's control system, configure settings via WEBUI using Wi-Fi, and enjoy stable long-range performance.
Is the ER4 the best 2.4GHz PWM receiver for RC cars?
With its compact design and responsive control, the ER4 stands out as one of the best 2.4GHz PWM receivers for precision car builds.
Can this ExpressLRS receiver be used for small aircraft models?
Absolutely. The ER4 was specifically designed for small aircraft models requiring reliable PWM output without adding weight.
SKU: airwave-er4-pwm-2-4ghz Category: Tags: , , , , , , ,

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