TBS Crossfire Diversity Nano RX

The TBS Crossfire Diversity Nano RX is a compact receiver capable of PPM, SBUS and CRSF designed for reliable RC signal transmission over long distances. The Diversity receiver has two antennae and 2 separate chips for increased reliability. The receiver also supports the so-called Beacon mode, where the receiver is powered by an external 1S battery that can power it all day long so you can locate the copter or aircraft depending on signal strength or telemetry.

English manual here.