Specifications

Model: SpeedyBee Nano 2.4GHz RX
Name: ExpressLRS Receiver
Frequency: 2.4GHz
Antenna: T-antenna (54*78mm, 0.6g)
Chip: SX1280+ESP8285
Power: 100mW
Input voltage: 5V
Antenna connector: IPEX1
Weight: 0.7 gram (without antenna)
Dimension: 10.4mm*18.4mm
Default Firmware: SpeedyBee Nano 2.4GHz RX 3.3.1

Light Indicator:

 Double red blinking: Binding in progress.
 Slow red blinking: Powering up but unlinked, no packages received from the transmitter.
 Solid red: Receiver is connected, with signal received.
 Fast red flashing: Wi-Fi is turned on, and updating via Wi-Fi is available.

PS.

To turn on Wi-Fi, wait for 60 seconds after powering on or long press button for 3 seconds

Quick to cut off the power 3 times, it enters the binding mode