Futaba R6004FF 4-Channel Indoor Micro Receiver (FASST)

Designed for short range application such as indoor aircraft only
Limited flight range of 300 ft (91.4m) maximum
Compatible with standard size connectors only
Easy one touch linking to transmitter
One year limited warranty

Futaba R6004FF 2.4GHz FASST 4-Channel Receiver with set up sheet

Installing in model and connecting servos and ESC

Dimensions: 0.81 x 1.39 x 0.30 (20.5 x 35.3 x 7.5mm)
Weight: 0.13oz (3.8g)
Power Requirement: 4.0V- 8.5V (although this receiver can be used at
8.5 volts, Futaba recommends you follow the voltage specs of your servos).
FS and Battery FS function (for channel three)
Battery FS Voltage: 3.8V
Approximate range of 300 ft (91.4m)
Antenna Length: 1