Features:
2.4GHz 4 channel receiver is compatible with All Transmitters with AFHDS3 Protocol, good for remote control Car and remote control Boat.
The FGr4D is a 4-channel two-way receiver based on AFHDS3(Third GenerationAutomatic FrequencyHoppingDigitalSystem) protocol.
This receiver features dual antennas, PPX6nanowaterproof. 
It supports 4 New port function interfaces(Newport canbe customizedwithinputoroutput signaltypes: i-BUS2/S.BUS/i-BUS/PPM).
Ultra-small size and ultra-lightweight, effectively save space and reduce item's weight-bearing.

Specification:
Product Model: FGr4D
Adaptive Transmitter: All Transmitters with AFHDS3 Protocol
Model Type: Carsor Boats, ect.
PWM Channels: 4
RF: 2.4GHz ISM
2.4G Protocol: AFHDS3
Maximum Power: < 20dBm (e.i.r.p.) （EU）
Antenna: Bulit-in Dual Antennas
Input Power: 3.5~9V/DC
Working Current: ≤ 50mA/5V
Data Output: PWM/PPM/i-BUS2/S.BUS/i-BUS
Temperature Range:-10℃ ~ +60℃
Humidity Range: 20%~ 95%
Water Proof: PPX6
Online Update: Yes
Size: 30.3*25.8*20mm
Weight: 7.2g

Package information:
Package size: 8 * 5 * 3cm
Package Weight: 13g
Package List:
1 * FGr4D receiver
1* Cable
1* User Manual
1* Stickers