The FGr4 adopts FlySky's third-generation automatic frequency hopping digital system, AFHDS 3. It uses a single-antenna, bidirectional transmission system that is uniquely designed to save space and supports standard PPM, and i-Bus signals.

High gain, high sensitivity RF components are used throughout, this coupled with FLYSKY's latest generation intelligent wireless 2.4GHz AFHDS 3 protocol, enables the receiver to reject interference easily, while maintaining high reception rates, and stable performance. This version 2 FGr4 supports PPM, i-BUS, and 4 PWM data outputs (CH1~CH4), and an input for connecting additional sensors. Another feature of this quality FLYSKY receiver is the ability to handle a wide input voltage, anything from 3.5-12V can be used, and the case has a sealing gasket which makes it water-resistant.

Features:
• AFHDS 3 protocol, achieves higher sensitivity and higher gain
• Bidirectional transmission system which supports multiple signal inputs
• Settings and updates are done online
• Has the ability to handle a wide input voltage (3.5~12V)
• High gain, high sensitivity RF components used throughout
• Supports PPM, i-BUS, and PWM data outputs
• Water resistant, this makes it suitable for use with cars, boats, and other surface models

Specs:
Type: FLYSKY FGr4 AFHDS3 Water Resistant V2 PPM/i-BUS Receiver
Data Output: PPM/i-BUS/PWM
Frequency Range: 2.402~2.480GHz
Range: 300m
Protocol: AFHDS 3
Transmission Power: 20dBm (EU)
Modulation: GMSK, CSS
Antenna: Single
RSSI: Yes
Display: LED indicator
Online Updates: Yes
Dimensions: 46x28x22mm
Weight: 22g
Certification: CE, FCC ID: N4ZFGR400

Note: A copy of the instruction manual is available under the "Manual/Files" tab.