{"product_id":"radiomaster-er3-pro-pwm-dual-band-receiver","title":"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver","description":"\u003ch4 data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003eRadioMaster ER3 PRO PWM Dual-Band GEMINI \u0026amp; GEMINI-X Receiver\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe RadioMaster ER3 PRO is a compact 3-channel PWM receiver featuring dual-band 2.4GHz and Sub-G 900MHz Gemini X technology. With up to 100mW telemetry output, dual voltage monitoring, and MMCX antenna connectors, it offers flexible connectivity for space-constrained RC installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_1_257ed0b4-08e5-4eaa-8020-468b255b674c.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpressLRS Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLow 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):\u003cspan\u003e \u003c\/span\u003e\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\u003cspan\u003e \u003c\/span\u003eIncreased 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\u003cspan\u003e \u003c\/span\u003eCompact PWM output with CRSF and SBUS options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal UART Port (Locking Connector):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDedicated interface for telemetry, external devices, and system expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent Multi-Source Voltage Telemetry:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMonitor 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\u003cspan\u003e \u003c\/span\u003eDurable, replaceable antennas with a secure connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWi-Fi Updates \u0026amp; WebUI:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfigure and update directly without disassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Injection-Molded Housing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCompact, protective enclosure for long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA 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\u003cspan\u003e \u003c\/span\u003eCompatible with all ExpressLRS transmitters and modules, including radios with built-in ELRS. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eThe ER3 PRO features ExpressLRS technology with dual Semtech LR1121 transceivers and Gemini X dual-band operation on 2.4GHz and Sub-G 900MHz. Telemetry output power is adjustable up to 100mW via LUA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_2_e15bb881-3bc1-45ca-a618-8d120bd4d316.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_3_41a4c6e4-a199-4685-ac87-e14e20acc5cb.jpg?v=1789020922\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_4_45bef269-b2de-41c1-9137-2808f4164b95.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eWith 3 PWM outputs, CRSF\/SBUS serial support, and two independent voltage monitoring channels, the ER3 PRO monitors receiver supply voltage up to 12V and external voltage from 4V to 70V. Locking connectors on the UART and EXT-V ports help keep connections secure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_5_bfbd82a6-a07a-4cc8-9325-8709c592b858.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_6_7fa0c837-8fd5-41f2-800e-dff7dcd1a4a2.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_7_fb3444d8-81b1-4b4e-8c38-d52cb01efcbf.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eMMCX antenna connectors allow for secure attachment and easy replacement, while the injection-molded housing protects the receiver in a compact form.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_8_99630dde-6c03-414a-bbdc-0bc15316addb.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/EN_PC_9_ba839db0-1735-4055-8b38-d179dfc1a11e.jpg?v=1789020923\" alt=\"ER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"text-decoration: underline; color: rgb(255, 42, 0);\"\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\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2S 7.4V battery\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor a suitable high-current UBEC is recommended.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eItem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eER3 PRO PWM - Dual-Band GEMINI and GEMINI-X Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eDC 5.0 – 12.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eWireless Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eExpressLRS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eOutput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3CH PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eSerial Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eCRSF \/ SBUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eTelemetry Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 100mW (adjustable via LUA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eVoltage Detection Range (EXT-V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eDC 4.0 – 70V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eCRSF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e25 cm high-sensitivity, MMCX connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e13.5 g (without antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e49.2 × 26.8 × 13.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eFirmware Target\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eRadioMaster Dual 2.4GHz\/900MHz Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eDevice Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eER3Pro Dual Band True Diversity + 3×PWM RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px; white-space: nowrap;\"\u003e\u003cstrong\u003eELRS FW Version\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eRequires version 4.1.0 or Higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"mysite","offers":[{"title":"LBT","offer_id":47873495400619,"sku":"BR0157.0140-LBT","price":49.99,"currency_code":"USD","in_stock":true},{"title":"International","offer_id":48349195272363,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/9191\/0315\/files\/imgi_119_ER3Pro-1.jpg?v=1789635444","url":"https:\/\/begreatrchobbystore.com\/products\/radiomaster-er3-pro-pwm-dual-band-receiver","provider":"Begreat RC Hobby","version":"1.0","type":"link"}