SKU: BS040-014 Categories: ,



  • ESP32-PICO-D4, SX1281, ExpressLRS Firmware
  • PA/LNA: SE2431L
  • RF Frequency: 2.4GHz ISM
  • Telemetry power: 22.5dbm (180mW)
  • Diversity: Antenna-switching, default ANT1
  • Barometer SPL06-001 (Vario)
  • Receiver output:  6x PWM CH
  • VBAT voltage sense: 0~25.5V
  • Antenna connector: IPEX MHF-1
  • Power supply: 4-13V DC @ “V” Pad
  • Power dissipation:  60mA~80mA@5V IN
  • PCB size: 30mm x 18mm
  • Weight: 4g w/ antenna
  • Packing:
    • 1x ELRS-R24-P6V
    • 2x IPEX MHF1 Antennas. 15cm
    • Dupont 2.54 pins  (Board is shipped unsoldered)


  • ExpressLRS,  wiki, Click HERE
  • Receiver Target:  Generic targets used as a base 2.4 GHz > > Generic ESP32 PWM Vario 2.4Ghz RX
  • Receiver has ExpressLRS 3.3.2 preloaded with binding phrase “123456”,  the Receiver will never enter binding mode if using the traditional binding procedure.
  • You need to reflash it with your binding phrase OR connect it to your PC/phone via WiFi and set your binding phrase in WebUI.


  • Full Resolution Switch Configuration Modes
  • Powering receiver with Reverse Voltage will damage the regulator chip. DOUBLE CHECK the power wires connected to the receiver.
  • Transmitter fw version should be EdgeTX 2.7.1/OpenTX 2.3.15 or newer


Flashing via Wifi

  • Power on receiver. Receiver’s LED(Red) will blink slow at first, and after 20s, it should blink fast indicating it’s on Wifi Hotspot Mode.
  • Wifi SSID “ExpressLRS RX”,  Password “expresslrs”
  • More detailed steps,  pls refer this page.

Flashing via UART

  1. Disconnect ESC and servos from receiver first.
  2. Wire the receiver into the USB-TTL adapter, with TX on receiver connected to the Rx on the USB-TTL, and RX on receiver connected to the Tx of the USB-TTL. Wire 5V and GND of the USB-TTL to “V” and GND of the Receiver.
  3. Press the boot button while powering on the receiver, then release – the Red LED on receiver should now be solid on.
  4. Configurator 1.6.x or newer,  Select the target Generic targets used as a base 2.4 GHz  –> Generic ESP32 PWM Vario 2.4Ghz RXX  and  “UART” for Flashing Method,  set your bind phrase and Firmware Options , Check “erase before flash” and “Force FLash “.
  5. Web-flasher

Additional information

Weight 0.1 kg


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