Radiomaster R81

Radiomaster R81 R84 R86 R86C R88

Tiny RadioMaster R81 8-channel receiver with 2.4G frequency, two antennas and FrSky D8 protocol compatibility. Suitable for installation on Whoop class mini quadcopters.

• Binding method:
• 1. Press and hold the BIND button on the receiver to connect the power. After about 3 seconds, the receiver LED will light up RED, the receiver is now in binding mode
• 2. Select D8 protocol from the remote control's multi-protocol menu and press the [BIND] option, the receiver's red light will start flashing to indicate successful binding
• 3. Exit the binding mode on the remote control and unplug the power of the receiver, then turn on the receiver again. The LED indicator will light RED, indicating that the pairing is complete. If not, repeat steps 1 and 2
• Fail-safe protection:
• 1. Press the BIND button within 10 seconds of turning on the receiver and the receiver will store all current remote control channel values as a fail-safe value
• 2. 10 seconds after the receiver is turned on, the BIND button function will be disabled to prevent accidental changes to the safety settings when preparing the model for flight
• RSSI output:
• This receiver has a total of 9 channels. 8 channels + one RSSI output channel.
• Channels 1-8 are controlled by the remote control, the 9th channel is the RSSI value of the signal strength output by the receiver itself, which can be read by the flight controller and sent to the Show Signal Strength OSD device.