RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver
- Protocol & Frequency ExpressLRS 3.3.0; 2.4GHz
- Channels & Output 3-channel PWM output
- Telemetry 10mW RF telemetry; external voltage detection 4–35V
- Power & Antenna DC 4.5–8.4V; built-in high-sensitivity ceramic antenna
- Size & Weight 26.1×18.5×13mm; 4.2g
- Product Summary Clean-install three-channel ExpressLRS PWM receiver with integrated ceramic antenna and voltage telemetry.
| Brand | Radiomaster |
|---|---|
| Protocol & Frequency | ExpressLRS 3.3.0; 2.4GHz |
| Channels & Output | 3-channel PWM output |
| Telemetry | 10mW RF telemetry; external voltage detection 4–35V |
| Power & Antenna | DC 4.5–8.4V; built-in high-sensitivity ceramic antenna |
| Size & Weight | 26.1×18.5×13mm; 4.2g |
RADIOMASTER / PRODUCT SPOTLIGHT
RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver
Clean-install three-channel ExpressLRS PWM receiver with integrated ceramic antenna and voltage telemetry.
Product overview
RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver is a radio receiver from Radiomaster. Clean-install three-channel ExpressLRS PWM receiver with integrated ceramic antenna and voltage telemetry.
Verify this exact model and revision against the requirements of your aircraft or radio system; visually similar alternatives can have different hardware specifications.
Model-specific features
ExpressLRS 3.3.0; 2.4GHz
3-channel PWM output
10mW RF telemetry; external voltage detection 4–35V
DC 4.5–8.4V; built-in high-sensitivity ceramic antenna
26.1×18.5×13mm; 4.2g
Technical specifications
| Protocol & Frequency | ExpressLRS 3.3.0; 2.4GHz |
|---|---|
| Channels & Output | 3-channel PWM output |
| Telemetry | 10mW RF telemetry; external voltage detection 4–35V |
| Power & Antenna | DC 4.5–8.4V; built-in high-sensitivity ceramic antenna |
| Size & Weight | 26.1×18.5×13mm; 4.2g |
Radio-link compatibility
For a reliable control link, confirm ExpressLRS frequency band, supported transmitter module, receiver firmware, antenna type, supply voltage and output interface. PWM servo receivers and serial CRSF nano receivers serve different wiring requirements. Check region and binding settings before flight.
Do not substitute a similar-looking model without confirming its mechanical and electrical compatibility.
Choose the exact variant
The specifications above refer to RadioMaster ER3C-i 2.4GHz ELRS PWM Receiver. Compare protocol & frequency, channels & output, telemetry, power & antenna with your existing hardware before ordering.
- Verify the model revision and product-specific connector or mount.
- Check compatibility with your flight controller, RF system or motor.
- Confirm pack contents and additional parts required for installation.
- Follow the manufacturer's instructions and test safely before flight.
Radiomaster
Explore the technology behind your next build.
Discover Radiomaster
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.
Related products
RadioMaster ER8G / ER8GV 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER8G / ER8GV 2.4GHz ELRS PWM Receiver
- Model ER8G, ER8GV
- Protocol & Frequency ExpressLRS 2.4GHz; ELRS 3.x pre-installed
- Channels & Telemetry 8 PWM channels; up to 100mW adjustable telemetry; 4–35V detection
- Power & Interfaces DC 3.5–8.4V; CRSF / SBUS serial; dual 20cm antennas
- Size & Weight 60×13.5×13mm; 12g; ER8GV includes barometric vario
- Product Summary Compact eight-channel ELRS PWM receiver available with or without an integrated vario.
RadioMaster ER6G / ER6GV 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER6G / ER6GV 2.4GHz ELRS PWM Receiver
- Model ER6G, ER6GV
- Protocol & Frequency ExpressLRS 2.4GHz; ELRS 3.x pre-installed
- Channels & Telemetry 6 PWM channels; up to 50mW adjustable telemetry; 3–26V detection
- Power & Antennas DC 3.5–8.4V; dual 15cm high-sensitivity antennas
- Size & Weight 42×13×8mm; 5g; ER6GV includes barometric vario
- Product Summary Slim six-channel ELRS PWM receiver available with or without an integrated vario.
RadioMaster ER5C V2 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER5C V2 2.4GHz ELRS PWM Receiver
- Protocol & Frequency ExpressLRS 3.3.0; 2.4GHz
- Channels & Output 5-channel PWM output
- Telemetry 10mW RF telemetry; external voltage detection 4–35V
- Power & Antenna DC 4.5–8.4V; high-sensitivity external antenna
- Size & Weight 30×18.5×13mm; 5.7g
- Product Summary Compact five-channel ExpressLRS receiver for surface and marine RC with voltage telemetry.
RadioMaster ER5A V2 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER5A V2 2.4GHz ELRS PWM Receiver
- Protocol & Frequency ExpressLRS 3.3.0; 2.4GHz
- Channels & Output 5-channel PWM output
- Telemetry 10mW RF telemetry; external voltage detection 4–35V
- Power & Antenna DC 4.5–8.4V; high-sensitivity external antenna
- Size & Weight 37×19.3×13mm; 6.7g
- Product Summary Five-channel ExpressLRS PWM receiver with high-sensitivity antenna and automatic voltage telemetry.
RadioMaster ER5C-i 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER5C-i 2.4GHz ELRS PWM Receiver
- Protocol & Frequency ExpressLRS 3.3.0; 2.4GHz
- Channels & Output 5-channel PWM output
- Telemetry 10mW RF telemetry; external voltage detection 4–35V
- Power & Antenna DC 4.5–8.4V; built-in high-sensitivity ceramic antenna
- Size & Weight 30×18.5×13mm; 5.0g
- Product Summary Five-channel surface-model ExpressLRS receiver with built-in ceramic antenna and automatic voltage telemetry.
RadioMaster ER4 2.4GHz ELRS PWM Receiver
- Exact Model RadioMaster ER4 2.4GHz ELRS PWM Receiver
- Protocol & Frequency ExpressLRS 3.3.0; 2.4GHz
- Channels & Output 4-channel PWM output
- Telemetry 10mW RF telemetry; external voltage detection 4–35V
- Power & Antenna DC 4.5–8.4V; 15cm high-sensitivity antenna
- Size & Weight 30×15×5mm; 3.0g
- Product Summary Compact four-channel PWM ExpressLRS receiver with voltage telemetry for lightweight RC installations.
RADIOMASTER ER6 2.4GHz ELRS PWM Receiver
- 6-Channel PWM Receiver for fixed-wing and RC applications
- 2.4GHz ExpressLRS with fast response and reliable link quality
- Dual Antenna Diversity with up to 100mW telemetry power
- CRSF / SBUS Support plus Wi-Fi and WebUI configuration
- Compact 14.5g Design with 4.5–8.4V input and 43 × 25 × 15mm size
RADIOMASTER ER8 2.4GHz ELRS PWM Receiver
- ExpressLRS 2.4GHz provides fast and reliable radio control.
- Eight PWM Channels support up to eight servos.
- Dual-Antenna Diversity improves signal reliability and coverage.
- 100mW Telemetry Power is adjustable through the LUA script.
- Voltage Telemetry monitors receiver or flight-battery voltage.
- CRSF and SBUS Outputs support flexible system integration.
- Wi-Fi Updates enable convenient firmware and WebUI configuration.
- 4.5–8.4V Input supports common receiver power systems.
- Compact Molded Housing protects the internal electronics.
- Approx. 16.5g Weight suits aircraft and RC applications.
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