Product name:FlySky FGr4B 2.4GHz 4CH AFHDS 3 Micro Mini RC Receiver PWM/PPM/i-bus/S.BUS/i-bus2 Output for PL18 NB4 NB4 Lite NB4+ Transmitter RC Car Boat Precise details: OVERVIEW: The FGr4B receiver adopts Flysky's third-generation automatic frequency hopping digital system (AFHDS 3). It uses a single-antenna bidirectional transmission system and is uniquely designed to install and output PWM/PPM/i-bus/S.BUS/i-bus2 in signals. It supports all AFHDS3 transmitters. Description: Brand: FlySky Model: FGr4B PWM Channels: 4 RF: 2.4GHz ISM 2.4G Protocol: AFHDS 3 Antenna: Single Antenna Input Power: 3.5~9V Data Output: PWM/PPM/i-bus/S.BUS/i-bus2 Temperature Range: -10℃-+60℃ Humidity Limit: 20%~95% Online Update: Yes Dimensions: 17*29*16.6mm Weight: 6.4g Colour: Black Position: Front Model Type: Car/Boat ect Certification: CE,FCC ID: N4ZFGR4B000 Adaptive transmitter: all transmitters supporting AFHDS3 (PL18, NB4, NB4 Lite etc.) Binding: - Press and hold the receiver BIND button [5] while powering on the receiver ,release the BIND button after receiver is powered on or powering on the receiver first, press and hold the BIND button 3 seconds , the LED [7] on the receiver will flash rapidly; - Put the transmitter into bind mode; - The binding process is complete when the LED on the receiver stops flashing and is on continuously. If a transmitter that has had its radio frequency (RF Standard) set to “AFHDS3 1 way”(please refer to your transmitter user manual) enters bind mode, the receiver LED will instead flash slowly. Exit bind mode on the transmitter and if the receiver LED stops flashing and is on continuously, the binding process is complete. - Check to make sure the transmitter and receiver functions are working correctly, repeat steps 1 to 3 (binding process) if any problems arise. Compatibility: The FGr4B receiver is compatible with all AFHDS 3 transmitters (Note: It is currently applicable to PL18 1.0.55, NB4 2.0.93 and NB4 lite 1.0.10 and later versions. The high-frequency library used by the firmware is version 3.0.) Package Included: 1 x FGr4B Receiver