Product overview
The RadioMaster ER5A V2 2.4GHz ELRS PWM Receiver provides five PWM channels to drive up to five servos. Built on ExpressLRS with ELRS 3.3.0 pre-installed, it supports Wi-Fi updates and WEBUI configuration. Built-in voltage telemetry automatically selects external battery voltage or receiver battery / ESC BEC voltage. The receiver operates from DC 4.5-8.4V, with a telemetry voltage detection range of DC 4.0 - 35V and RF telemetry power of 10mw. It works with all 2.4GHz ExpressLRS modules and transmitters incorporating 2.4GHz ExpressLRS.
A built-in temperature compensated crystal oscillator, high-sensitivity antenna and optimized PCB design form the receiver’s hardware. Its compact body measures 37.0 * 19.3 * 13.0mm and weighs 6.7 grams for easy installation. Firmware selection uses the RadioMaster 2.4 GHz device category and RadioMaster ER5A 2.4GHz PWM RX device. Each package supplies one ER5A V2 2.4GHz ELRS PWM Receiver, one voltage telemetry wire and one user card.
