The FrSky TD R18 2.4GHz 900M Dual-Band Tandem Receiver is unlike any other FrSky 2.4Ghz or 900Mhz receiver. The TD R18 works simultaneously at both 900Mhz and 2.4Ghz frequencies. That means Tandem receivers provide not only low latency signal and long-range control, but also benefits from an enhanced level of high reliability and anti-interference performance.