Receiver Overview:FlySky FGr4D 2.4GHz 4-Channel AFHDS3 Receiver. The FGr4D is a four-channel, two-way receiver utilizing the AFHDS3 (Third Generation Automatic Frequency Hopping Digital System) protocol. Featuring dual antennas, a PPX6 nano waterproof rating, and a compact, lightweight design, this receiver supports four Newport function interfaces. These interfaces can be customized for various signal types, including i-BUS2, S.BUS, i-BUS, and PPM. Additionally, the FGr4D can function as a PWM converter, making it ideal for use in model cars or boats. Features:Seamless integration with compatible FlySky AFHDS3 TransmittersLightweight and compact, making it suitable for a wide range of applicationsEasy-to-use bind button for quick and straightforward bindingOperates efficiently within a wide voltage range, making it versatile for different power supply setupsFail-safe settings enhance safety by ensuring the model behaves predictably in case of signal lossUtilizes the AFHDS3 protocolCompatible transmitters: all AFHDS 3 transmitters and RF Modules (Noble NB4+, Noble NB4+ Pro, PL18, Paladin EV, NB4, NB4 Lite, etc.)Specifications:Input Voltage: 3.5-9VFrequency: 2.4GHzChannels: 4ChProtocol: AFHDS3Antenna: DualDimensions: 1.1x1.0x1.1in (30x25.8x20mm)Weight: 0.25oz (7.2g)Includes:(1) FlySky FGr4D 4-Channel Receiver