RadioLink RC4GS 2.4G 4CH FHSS Radio Transmitter with R6FG Receiver

Package Included :
1 x RC4GS Transmitter
1 x R6FG Receiver

Spec
Item No.: RC4GS
Size: 213 X 117 X 115.5mm
Frequency: 2.4Ghz ISM Band (2400MHz-2483.5MHz)
Channel: 4CH
Channel resolution: 4096, the regular jitter is 0.5us
Model: Cars/Boats
Modulation Mode: GFSK
Spread Spectrum: FHSS, 16 Channels Pseudo Random Frequency Sequence Hopping
10 Modes Memory Storage
Antenna Length: 106mm
Control Distance: More than 400 meters ground
LCD Screen: 128 X 64 Resolution, LCD Back Light
Transmitter Operating Voltage: 4.8-15.0V DC
Transmitter Battery: 1.5V 4 X AA or 2-4S lithium battery
Transmitter operating current :80-120mA
RF power: <20dbm
Low Voltage alert: Yes(lower than 4.6V),can be set when using 2-4S li- po battery
Receiver: R4FG, R4F, R8EF, R8FM