Features 1).Adopts 2.4GHz Direct Sequence Spread Spectrum (DSSS) that features fast reaction and strong anti-jamming protection. 2). Double reveiving circuits effectively assure the stability of receiving singal. 3). The Single Chip Micyoco as CPU provides super-strong analysing ability. 4). The output of singals simultaneous increases the ability of synchronization 5). 11 Millisecond and 22 Millisecond Frame Rate selectable. 6). The RECEIVER maintains the frequency and the ID memories when its changing a new battery pack with the transmitter powered on. 7). It can be customizedly set as fixed ID and automatic ID assignment.