![[Pre-order] ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver](/_next/image?url=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0701%2F8066%2F7584%2Ffiles%2FER3Pro-1.jpg%3Fv%3D1789022816&w=1080&q=75)
radiomasterRadioMaster
[Pre-order] ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver
Manufacturer part no. RM0157.0140
$49.99≈ 43.32 €
Price summary
Listed by radiomaster at €43.32. Delivered to France, including shipping, VAT and any customs duty, it comes to about €69.98. Prices last checked on 2026-09-16.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
In stock
Estimated landed cost
| Item | €43.32 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €11.66 |
| Total delivered | €69.98 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
Specifications (automatically extracted)
Mechanical
| Weight | 250 g |
Description
The ER3 PRO is a compact receiver designed for installations where space is limited but link reliability and system access remain important. Despite its small footprint, it retains a full-featured RF and telemetry interface, making it well suited for clean, space-constrained builds. Note on FCC Certification: Due to current FCC regulations classifying this product as a foreign-produced UAS component, we are currently unable to obtain FCC certification. This item cannot be shipped to or sold in the United States at this time. Please note this is the pre-order; Orders start shipping at the end of September. Features ExpressLRS Performance: Low latency, high reliability, and excellent link quality with flexible configuration options. Dual-Band Gemini X (2.4GHz + Sub-G 900MHz): Utilizes both frequency bands to provide enhanced link reliability across a wide range of operating environments. Up to 100mW Telemetry Output: Increased telemetry output power for improved data reliability and range. 3 PWM Outputs + Serial Support: Compact PWM output with CRSF and SBUS options. External UART Port (Locking Connector): Dedicated interface for telemetry, external devices, and system expansion. Independent Multi-Source Voltage Telemetry: Monitor up to two power sources simultaneously using dedicated ADC channels: EXT-V (up to 70V), receiver supply voltage (V-PWM) (up to 12V). MMCX Antenna Connectors: Durable, replaceable antennas with a secure connection. Wi-Fi Updates & WebUI: Configure and update directly without disassembly. Durable Injection-Molded Housing: Compact, protective enclosure for long-term reliability. Application: A compact, full-featured receiver for models that require advanced RF performance, telemetry, and connectivity in a space-efficient package. Compatibility: Compatible with all ExpressLRS transmitters and modules, including radios with built-in ELRS. At its core is the ExpressLRS system, built around dual Semtech LR1121 transceivers and a dual-band Gemini X
