Flysky FGr4B Receiver for Noble NB4 Pro Radio System.

Specification:

• Number of channels 4
• Suits: car, boat
• Data output: PPM/i-BUS/PWM
• Frequency range: 2.402-2.480GHz
• Transmitting power: <20dBm (EU)
• RF standard: AFHDS 3
• Type of antenna: built-in
• Input power: 3.5V~8.4V
• Display: LED  
• Online update: yes
• Size: 25.5 x 22 x 17.3mm
• Weight: 5.1g
• Safety certification: CE, FCC ID: N4ZFGRS4OO