The RadioMaster ER series of PWM receivers are based on the revolutionary ExpressLRS system. It offers high performance, high reliability, flexible configuration, fast response speed and ultra-long range bringing you brand new experience with your hobby.

The ER4 PWM receiver can drive 4 servos simultaneously. Designed with a very small volume, it is suitable for small aircraft models, ship models, car models and other models that require a small or lightweight receiver while still providing full range.

Features

• Based on the Revolutionary ExpressLRS System

• High performance, high reliability, flexible configuration, fast response speed and ultra-long range

• Support 4 PWM Channel

• Optimized ground up PCB design

• Automatically voltage telemetry of external battery voltage or built-in receiver voltage

• Supports Wi-Fi updates and WEBUI configuration

• High quality 2.54 mm connector

• Standard 15 cm High Sensitivity Antenna

• For small aircraft, boats and cars and more