RadioMaster ER3 PRO PWM Dual-Band Gemini-X ExpressLRS Receiver
- Exact Model RadioMaster ER3 PRO PWM Dual-Band Gemini-X ExpressLRS Receiver
- Protocol & Frequency ExpressLRS Gemini-X; 2.4GHz + Sub-G 900MHz
- Channels & Output 3 PWM channels; CRSF / SBUS serial output
- Telemetry Up to 100mW; receiver and EXT-V monitoring up to 70V
- Power & Antennas DC 5–12V; 25cm high-sensitivity MMCX antennas
- Size & Weight 49.2×26.8×13mm; 13.5g without antennas
- Product Summary Compact three-channel dual-band Gemini-X receiver with full serial and voltage-telemetry support.
| Brand | Radiomaster |
|---|---|
| Protocol & Frequency | ExpressLRS Gemini-X; 2.4GHz + Sub-G 900MHz |
| Channels & Output | 3 PWM channels; CRSF / SBUS serial output |
| Telemetry | Up to 100mW; receiver and EXT-V monitoring up to 70V |
| Power & Antennas | DC 5–12V; 25cm high-sensitivity MMCX antennas |
| Size & Weight | 49.2×26.8×13mm; 13.5g without antennas |
RADIOMASTER | RECEIVER DETAILS
RadioMaster ER3 PRO PWM Dual-Band Gemini-X ExpressLRS Receiver
Compact three-channel dual-band Gemini-X receiver with full serial and voltage-telemetry support.
Receiver overview
RadioMaster ER3 PRO PWM Dual-Band Gemini-X ExpressLRS Receiver is a RadioMaster receiver intended for the radio-control use and configuration stated in its specifications. Compact three-channel dual-band Gemini-X receiver with full serial and voltage-telemetry support.
RadioMaster receiver models can differ in RF band, channel count, diversity architecture and output interface. Check this exact version rather than assuming all ExpressLRS receivers work identically.
Key capabilities
ExpressLRS Gemini-X; 2.4GHz + Sub-G 900MHz
3 PWM channels; CRSF / SBUS serial output
Up to 100mW; receiver and EXT-V monitoring up to 70V
DC 5–12V; 25cm high-sensitivity MMCX antennas
49.2×26.8×13mm; 13.5g without antennas
Technical specifications
| Protocol & Frequency | ExpressLRS Gemini-X; 2.4GHz + Sub-G 900MHz |
|---|---|
| Channels & Output | 3 PWM channels; CRSF / SBUS serial output |
| Telemetry | Up to 100mW; receiver and EXT-V monitoring up to 70V |
| Power & Antennas | DC 5–12V; 25cm high-sensitivity MMCX antennas |
| Size & Weight | 49.2×26.8×13mm; 13.5g without antennas |
Radio and installation compatibility
Verify the number of PWM channels and the actual receiver variant (for example ER6G versus ER6GV). Check the radio module's ExpressLRS band, firmware and telemetry requirements before binding. PWM outputs and serial CRSF are distinct interfaces.
Install antennas away from carbon shielding and high-current wiring. Perform a safe bind, telemetry and failsafe test before relying on the link in operation.
Before ordering this receiver
- Confirm the exact model, RF band and hardware revision.
- Match ExpressLRS firmware and the radio module configuration.
- Check whether PWM, CRSF or a dedicated gimbal connection is required.
- Confirm package antenna type, plug and mounting clearance.
Radiomaster
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RadioMaster designs radio-control hardware for hobby pilots and FPV builders, including transmitters, receiver modules and accessories built around modern control links. The range covers compact portable radios as well as feature-rich controllers with configurable switches, sticks and supported radio systems.
Radio selection is about ergonomics and the complete signal chain. ExpressLRS band, internal module version, receiver protocol, external module support and firmware configuration all affect compatibility. A well-matched radio offers comfortable control while leaving room to grow into a broader set of aircraft.
Before buying a RadioMaster transmitter or accessory, check the exact edition, region and radio protocol, plus the batteries or charging arrangement that specific model uses. Choosing the right receiver and updating firmware carefully are essential steps in a dependable setup.
Shipping Information
- Dubai Deliveries: Free one-day delivery within Dubai on business days, with an option for cash on delivery.
- UAE Deliveries: Delivery to other Emirates outside Dubai is available for a flat fee of AED 35, with an estimated delivery time of 2–3 business days. Please contact our team to check availability.
- International Deliveries: Shipping to GCC countries, the Middle East, and Africa is available upon prior arrangement with our support team due to varying import regulations. Customs, clearance fees, and taxes are the buyer's responsibility. For international shipping of additional accessories, all shipping costs, customs duties, and related fees will also be borne by the buyer.
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