This is the Futaba R6004FF 2.4GHz FASST 4-Channel Micro Receiver. Compatible with the following FASST transmitters; 6EX, 7C, and the following transmitter modules; TM7, TM8 (on 7 channel mode), TM10 (on 7 channel mode) and TM14 (on 7 channel mode).

FEATURES.

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