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The RadioMaster ER5A-V2 is a compact ExpressLRS receiver with five PWM channels, made for pilots who want long range and low latency without a flight controller. It is a natural fit for RC airplanes, cars, boats, robotics and small drones.
It runs ELRS 3.3.0 out of the box, has a built-in TCXO and a PCB designed from the ground up for ELRS. It works with all 2.4 GHz ExpressLRS transmitters and modules.
Power input is 4.5 to 8.4 V DC and the board measures 37.0 x 19.3 x 13.0 mm and weighs 6.7 g. It reports voltage telemetry over a range of 4.0 to 35 V, detecting the external battery or the receiver supply or ESC BEC voltage automatically, and telemetry power is 10 mW. Wi-Fi updating and a web-based configuration page make setup simple.
Fixed-wing models, ground vehicles and any build that uses plain PWM outputs. If you need SBUS or CRSF for a flight controller, look at a receiver that offers those outputs.
Connect the five PWM outputs to your servos or ESC, power the receiver from a 4.5 to 8.4 V source such as a BEC or the ESC, and bind it to your ExpressLRS transmitter module. If you leave an ExpressLRS receiver powered without a link for a short time it opens a Wi-Fi hotspot, which is how you update firmware and reach the web configuration page. Set the failsafe positions there before flying.
Five PWM channels.
ExpressLRS 3.3.0.
4.5 to 8.4 V DC.
Yes, from 4.0 to 35 V.
Through Wi-Fi and a web UI.
| Brand | Radiomaster |
|---|---|
| Power Supply | DC 4.5-8.4V |
| Weight | 6.700000 g |
| Selling unit | PCS |
