RadioMaster ER4 2.4GHz ELRS PWM Receiver
The RadioMaster ER4 is a compact 4-channel PWM receiver built on the ExpressLRS 2.4GHz protocol, delivering low-latency control and long-range telemetry for small-scale RC models. It features a wide 4.0–35V input range and supports CRSF/SBUS output for flexible integration.
Features
- ExpressLRS 2.4GHz protocol with pre-installed firmware (v3.3.0) for ultra-low latency and long-range performance.
- 4-channel PWM output for direct servo control, ideal for small aircraft, boats, and car models.
- Wide voltage input range (4.0–35V DC) with automatic voltage telemetry for external or internal power monitoring.
- Compact, optimized PCB design with a 15cm high-sensitivity antenna for reliable signal reception.
- Supports Wi-Fi-based firmware updates and WEBUI configuration for easy setup and tuning.
Out of stock
The RadioMaster ER4 receiver leverages the ExpressLRS open-source protocol to provide a robust link with minimal latency, making it suitable for performance-oriented FPV and line-of-sight RC applications. Its design prioritizes a small footprint and low weight without sacrificing the telemetry and configuration capabilities expected from modern radio systems.
Engineered for durability, the receiver includes high-quality 2.54mm connectors and is supplied with protective heat-shrink tubing. The integrated voltage telemetry wire allows for real-time battery monitoring, enhancing flight safety and operational awareness during use.
Additional Information
| Weight | 0.019 kg |
|---|---|
| Dimensions | 14 × 8 × 2 cm |
