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The RadioMaster ER series of PWM receivers is based on the revolutionary ExpressLRS system. It offers high performance, high reliability, flexible configuration, fast response speed and ultra-long range, giving you a whole 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 requiring a small or lightweight receiver while offering full range.