SKU: DRFC-3289
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RadioMaster ER5C V2 2.4GHz ELRS PWM Receiver

₹2,929.00 (Inclusive of all taxes)
Out of Stock

The RadioMaster ER5C V2 is a compact 2.4GHz ExpressLRS PWM receiver delivering 5 servo channels with integrated voltage telemetry, designed for surface and marine RC applications requiring long-range, low-latency control.

Features

  • ExpressLRS 2.4GHz protocol for ultra-long range and ultra-fast response.
  • 5-channel PWM output for direct servo and ESC control.
  • Integrated TCXO ensures stable frequency and reliable performance across temperature variations.
  • Automatic voltage telemetry detection for receiver BEC or external battery packs.
  • Supports Wi-Fi-based firmware updates and WEBUI configuration for easy setup.

Out of stock

Description

The ER5C V2 receiver leverages the ExpressLRS open-source protocol to provide a robust link with industry-leading low latency and extended range, making it ideal for demanding surface and marine RC models. Its optimized PCB design and high-sensitivity antenna ensure a stable connection even in challenging RF environments.

Built-in telemetry automatically switches between monitoring the receiver’s BEC voltage or an external battery pack via the included telemetry wire, providing critical power system data back to the transmitter. The compact form factor and lightweight construction facilitate easy installation in tight spaces within cars, boats, and other vehicles.

Key Features

  • ExpressLRS 2.4GHz system delivers high-reliability, long-range control with sub-10ms latency.
  • Five standard PWM outputs support simultaneous control of servos, ESCs, and auxiliary devices.
  • Temperature-compensated crystal oscillator (TCXO) maintains precise frequency for consistent performance.
  • Automatic voltage telemetry selection eliminates manual configuration for power monitoring.
  • Dedicated Wi-Fi access point enables over-the-air firmware updates and web-based configuration.
  • High-sensitivity internal antenna provides excellent signal reception in varied orientations.
  • Compact dimensions (30 x 18.5 x 13 mm) and 5.7-gram weight minimize impact on vehicle balance.

Applications

  • 1/10 and 1/8 scale RC crawlers and buggies requiring precise servo control and long-range telemetry.
  • RC boats and marine vessels where a waterproof, compact receiver with stable signal is critical.
  • Scale model trucks and construction equipment utilizing multiple servo channels for auxiliary functions.
  • FPV ground vehicles where low-latency ExpressLRS control and voltage monitoring are essential.
  • General surface RC applications where upgrading from older PWM receivers to modern ExpressLRS is desired.

Technical Specifications

Item TypeELRS PWM Receiver
ProtocolExpressLRS 2.4GHz
Channels5 PWM
Antenna TypeHigh-sensitivity internal antenna
TelemetryAutomatic Voltage Detection (Receiver/External)
OscillatorTCXO (Temperature Compensated Crystal Oscillator)
ConfigurationWi-Fi WEBUI
Length30 mm
Width18.5 mm
Height13 mm
Weight5.7 g

Frequently Asked Questions

What is the main advantage of the ExpressLRS protocol in this receiver?

The ExpressLRS protocol provides an ultra-low latency link, typically under 10ms, combined with exceptional long-range performance due to its efficient LoRa modulation. This results in precise, real-time control for fast-moving surface vehicles and reliable connectivity at extended distances, far surpassing older PWM receiver technologies.

How does the automatic voltage telemetry work?

The receiver automatically detects whether it is powered by an ESC's BEC (via the throttle channel) or by an external battery pack connected to the dedicated telemetry port. It then reports the correct voltage back to your transmitter via the ExpressLRS telemetry stream, allowing for real-time battery monitoring without manual configuration.

Can I update the firmware on this receiver, and how?

Yes, the ER5C V2 supports firmware updates via Wi-Fi. You power on the receiver, connect to its broadcast Wi-Fi network from a computer or phone, and access a built-in web interface (WEBUI) to upload the latest ExpressLRS firmware file. This process allows for easy updates and configuration changes without requiring a physical USB connection.

Is this receiver suitable for drone or aircraft use?

While technically functional, the ER5C V2 is specifically designed and optimized for surface and marine applications. Its feature set, including 5 PWM outputs and automatic voltage telemetry for external packs, is tailored for cars, boats, and crawlers. For multirotor drones, a receiver with CPPM, SBUS, or CRSF serial output is generally recommended for flight controllers.

Package Includes

  • 1 x ER5C V2 2.4GHz ELRS PWM Receiver
  • 1 x Voltage telemetry wire
  • 1 x User Card

Additional Information

Weight 0.0057 kg
Dimensions 3 × 1.85 × 1.3 cm