{"product_id":"radiomaster-er3-pro-pwm-dual-band-gemini-x-receiver","title":"RadioMaster ER3 PRO PWM Dual-Band GEMINI-X Receiver","description":"\u003ch1\u003eRadioMaster ER3 PRO PWM Dual-Band GEMINI-X Receiver\u003c\/h1\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/3vInqhMlb1I?si=vSlooso6LUwCbp8P\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/2XI8F6mb-W0?si=ItDPtW3jT707Y6Bt\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/_qWXea7giXM?si=0OEIoDS8dC-dPjo4\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/11_1fc3a8cd-2c56-4fe0-a3de-393f88b66a5e.webp?v=1790736625\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpressLRS Performance:\u003c\/strong\u003e Low latency, high reliability, and excellent link quality with flexible configuration options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Band Gemini X (2.4GHz + Sub-G 900MHz): \u003c\/strong\u003eUtilizes both frequency bands to provide enhanced link reliability across a wide range of operating environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 100mW Telemetry Output:\u003c\/strong\u003e Increased telemetry output power for improved data reliability and range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 PWM Outputs + Serial Support:\u003c\/strong\u003e Compact PWM output with CRSF and SBUS options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal UART Port (Locking Connector):\u003c\/strong\u003e Dedicated interface for telemetry, external devices, and system expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent Multi-Source Voltage Telemetry:\u003c\/strong\u003e Monitor up to two power sources simultaneously using dedicated ADC channels: EXT-V (up to 70V), receiver supply voltage (V-PWM) (up to 12V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMMCX Antenna Connectors:\u003c\/strong\u003e Durable, replaceable antennas with a secure connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWi-Fi Updates \u0026amp; WebUI:\u003c\/strong\u003e Configure and update directly without disassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Injection-Molded Housing:\u003c\/strong\u003e Compact, protective enclosure for long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e A compact, full-featured receiver for models that require advanced RF performance, telemetry, and connectivity in a space-efficient package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Compatible with all ExpressLRS transmitters and modules, including radios with built-in ELRS. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt its core is the ExpressLRS system, built around dual Semtech LR1121 transceivers and a dual-band Gemini X RF architecture operating on both 2.4 GHz and Sub-G 900 MHz. Combined with up to 100mW telemetry output power, it provides a stable control link and enhanced telemetry performance for applications where reliable telemetry data is important.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/12_c7c6d3b2-186b-4b29-8bf6-603bb494245f.webp?v=1790736663\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/13_8c85a04f-0fdd-4242-be22-de5b2f356632.webp?v=1790736663\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/14_1042211d-cbce-4155-b628-1742e0089574.webp?v=1790736664\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eWith 3 PWM outputs, serial protocol support, and dual independent voltage telemetry channels, the ER3 PRO integrates easily into a wide range of aircraft and vehicle platforms. Dedicated ADC channels independently monitor receiver supply voltage (V-PWM) (up to 12V) and EXT-V (up to 70V), providing accurate telemetry for each voltage source. Locking connectors on the UART and EXT-V telemetry ports help ensure secure, reliable connections in demanding operating environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/15_f27a4c94-59a0-4ed8-8ec0-fcd204132391.webp?v=1790736711\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/16_3a0c93ad-e9b6-487a-9f00-b233c207e9f2.webp?v=1790736712\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/17_1002a742-e4f4-463b-8b8b-de27071c7b58.webp?v=1790736712\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eServiceability is built in. Robust MMCX antenna connectors provide secure attachment and easy replacement, while the durable injection-molded housing delivers long-term protection in a compact form factor.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/18_6adeb302-b41e-483e-b019-a7c2c66f29f1.webp?v=1790736765\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/19_33c3d14b-7ded-4398-93cc-29f258291ccc.webp?v=1790736764\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/20_76969bcc-7f86-4ac4-8018-2532667abb42.webp?v=1790736764\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003e⚠️ Power Input \u0026amp; Voltage Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eEXT-V Telemetry Input:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe maximum input voltage for the EXT-V external voltage telemetry reading is 70V. Do not exceed 70V, as this may damage the receiver.\u003cbr\u003eThe EXT-V input is accessed through the 2-pin JST-GH connector. Connect the red wire to the positive (+) terminal of the battery or ESC. The ER3 PRO provides independent ADC channels for EXT-V and receiver supply voltage (V-PWM).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eServo Power:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnsure the ESC’s BEC can provide sufficient current for the servos being used. For high-voltage, high-torque servos, a \u003cstrong\u003e2S 7.4V battery\u003c\/strong\u003e or a suitable high-current UBEC is recommended.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eItem: ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\u003c\/li\u003e\n\u003cli\u003eInput Voltage: DC 5.0 – 12.0V\u003c\/li\u003e\n\u003cli\u003eWireless Protocol: ExpressLRS\u003c\/li\u003e\n\u003cli\u003eOutput Channels: 3CH PWM\u003c\/li\u003e\n\u003cli\u003eSerial Output: CRSF \/ SBUS\u003c\/li\u003e\n\u003cli\u003eTelemetry Power: Up to 100mW (adjustable via LUA)\u003c\/li\u003e\n\u003cli\u003eVoltage Detection Range (EXT-V): DC 4.0 – 70V\u003c\/li\u003e\n\u003cli\u003eBus Interface: CRSF\u003c\/li\u003e\n\u003cli\u003eAntenna: 25 cm high-sensitivity, MMCX connector\u003c\/li\u003e\n\u003cli\u003eWeight: 13.5 g (without antenna)\u003c\/li\u003e\n\u003cli\u003eDimensions: 49.2 × 26.8 × 13.0 mm\u003c\/li\u003e\n\u003cli\u003eFirmware Target: RadioMaster Dual 2.4GHz\/900MHz Receiver\u003c\/li\u003e\n\u003cli\u003eDevice Name: ER3Pro Dual Band True Diversity + 3×PWM RX\u003c\/li\u003e\n\u003cli\u003eELRS FW Version: Requires version 4.1.0 or Higher\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eSize\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/21_906e02fa-6b96-4d4f-85d2-f98b8e471e49.webp?v=1790736819\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDownload\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/ER3P_1.2.pdf?v=1789544996\" rel=\"noopener\" target=\"_blank\"\u003eER3 PRO Receiver User Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003ePackage Includes\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 * ER3PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\u003c\/li\u003e\n\u003cli\u003e2 * 2.4GHz Antennas\u003c\/li\u003e\n\u003cli\u003e2 * Dual-Band Antennas\u003c\/li\u003e\n\u003cli\u003e1 * Voltage Telemetry Cable (Type-B)\u003c\/li\u003e\n\u003cli\u003e1 * CRSF Cable\u003c\/li\u003e\n\u003cli\u003e1 * ELRS RX SBUS Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/22_23dc7bad-e7a8-44a7-b682-0f3537936865.webp?v=1790736819\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e","brand":"HobbyPorter","offers":[{"title":"Default Title","offer_id":42769339252818,"sku":null,"price":188.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1762\/4057\/files\/1_5b3b8f40-50f8-44cd-a826-a71cd8d8f214.webp?v=1790736854","url":"https:\/\/ae.fpvfaster.com\/products\/radiomaster-er3-pro-pwm-dual-band-gemini-x-receiver","provider":"FpvFaster","version":"1.0","type":"link"}