Product overview
The Jumper 2.4 & 915 Dual-Band ExpressLRS Receiver provides an RF link through a compact receiver module built around two third-generation Semtech LR1121 transceivers. Its architecture combines true diversity with dual-band operation, supporting 2.4GHz, 915MHz and Xrossband (Gemini-X) within one module. The specified protocol is ELRS GEMINI (2.4GHz&915MHz). Measuring 33*22mm, the receiver requires a DC5V supply and provides an ELRS 2.54-4P interface alongside an IPEX antenna interface. Firmware upgrades use Wi-Fi.
Automatic band selection supports the receiver’s stated operating scenarios. For urban or racing use, it switches to 2.4G for low latency and smooth control. For long-distance travel or complex terrain, it switches to 915M for long-range stability and strong penetration. These functions accompany the receiver’s combined 2.4GHz, 915MHz and Gemini-X capabilities, bringing both frequency bands and the crossband mode into the same compact hardware module.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | Jumper 2.4 & 915 Dual-Band ExpressLRS Receiver |
| Protocol | ELRS GEMINI (2.4GHz&915MHz) |
| Interface type | ELRS 2.54-4P |
| Antenna interface | IPEX |
| Firmware upgrade | WIFI |
| Supply voltage | DC5V |
| Dimensions | 33*22mm |
| RF architecture | Two third-generation Semtech LR1121 RF transceivers |
| Supported RF modes | 2.4GHz, 915MHz and Xrossband (Gemini-X) in one module |
| Diversity architecture | True diversity and dual-band |
| Automatic 2.4G selection | Automatically switches to 2.4G for low latency and smooth control.Urban / racing |
| Automatic 915M selection | Automatically switches to 915M for long-range stability and strong penetration.Long-distance travel / complex terrain |
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