Cooltech RSF04SB 2.4G 4CH Receiver For FUTABA S-FHSS/FHSS TRANSMITTERS  NEW IN THE PACKAGING. 4 CHANNEL S BUS COMPATIBLE 

SPECIFICATIONS:
Passageway:  4ch
Adhibition:  Fixed wing/Helicopter/gliders/Car/Boat
Frequency range:  2.400GHz-2.483GHz
Decoding mode:  PCMS 1024/PCMS4096
Working Temperature range: -10~+80℃
Input voltage:  3.5-8.4v
Antenna Length:  145mm(5.65in)
Weight:  10g(0.35oz)
Receiving mode: S-FHSS 
Size:  43.5x22.5x10mm(1.7x0.8x0.4in)

Features:
1)Stable performance and high receiving sensitivity
2)Two selectable failsafe setting options
3)Improve capability of anti-interference
4)Firmware upgradable

Compatibility:
Applicable systems:Futaba S-FHSS system and TM-FH RF Module
Futaba S. BUS servos
Futaba 10J, 8J, 6J, 4GRS, 4PX, etc.