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FPV Electronics > VTX & Receiver
The ELRS 2.4GHz Receiver is a high-performance, ultra-low-latency radio link solution designed for competitive FPV drones and long-range UAVs. Utilizing the ExpressLRS open-source protocol, it delivers exceptional signal stability, extended range, and minimal latency in a compact form factor. Engineered with dual-band readiness (2.4GHz/915MHz) and advanced RF components, this receiver ensures reliable control in urban and open environments while supporting firmware customization for specialized applications:cite[1]:cite[2].
| Parameter | Specification |
| Protocol | ExpressLRS 3.x (Open Source) |
| Frequency Band | 2.4GHz ISM (Dual-band capable*) |
| Latency | 1-10ms (Adjustable) |
| Max Refresh Rate | 1000Hz |
| RF Power Output | 100mW (Telemetry) |
| Input Voltage | 3.5-5.5V DC |
| Operating Range | >10km (Line-of-Sight) |
| Antenna Connector | IPEX1/U.FL |
| Weight | ≤1.0g (Excluding Antenna) |
| Dimensions | 17×11×4mm |
| Interface | SBUS/CRSF/INVERTED SBUS |
• Ultra-Low Latency: 1ms mode for racing (<10ms end-to-end delay):cite[2]
• High Telemetry Power: 100mW downlink for robust signal feedback:cite[2]
• Dynamic Frequency Shifting: Auto-hopping across 8 channels (2414-2510MHz) to avoid interference:cite[1]:cite[3]
• Dual PA+LNA Amplifiers: Enhances uplink sensitivity and downlink strength:cite[2]
• TCXO Oscillator: ±0.5ppm frequency stability under thermal stress (-40°C to +85°C):cite[2]
• WiFi OTA Updates: Firmware upgrades via smartphone/laptop without physical connections:cite[2]
• Fail-Safe Modes: Customizable hold/land/RTH actions on signal loss
| Range Condition | Packet Rate | Latency | Max Speed |
| <500m | 1000Hz | 1ms | 200km/h |
| 500m-3km | 250Hz | 4ms | 150km/h |
| >3km | 50Hz | 10ms | 80km/h |
| Tested with 2.4GHz transmitter @100mW in open terrain |
• MultiGP league competitions requiring sub-5ms latency
• Indoor whoop races with high WiFi/crowd interference
• Mountain surfing (10km+ range with directional antennas)
• Autonomous waypoint missions
• Urban gap flying with concrete penetration
• HD analog/digital video systems (DJI, Walksnail)
• Swarm robotics with 50+ receivers (TDMA synchronization)
• Drone racing leagues with spectating telemetry
• Operating Temp: -40°C to +85°C (85% non-condensing humidity)
• Vibration Resistance: 10G @ 20-2000Hz (MIL-STD-810G)
• EMI Shielding: Tolerates 6S ESC noise ≤30dBμV:cite[1]
• Water Resistance: Conformal-coated PCB (IP54 equivalent)
• Power Efficiency: 70mA @5V (1000Hz mode) / 25mA @5V (50Hz mode)
• Storage Conditions: -40°C to 105°C in ESD-safe packaging