The smallest of the FrSky X-Series receivers. Has full telemetry and is F.Port compatible. Inverted S.Port and S.Bus solder-pads are available but really small. The pictures show size comparison between R-XSR, XM+ and XSR-E (XSR-M) receivers.

The smallest of the FrSky X-Series receivers. Has full telemetry and is F.Port compatible. Inverted S.Port and S.Bus solder-pads are available but really small. The pictures show size comparison between R-XSR, XM+ and XSR-E (XSR-M) receivers.

The smallest of the FrSky X-Series receivers. Has full telemetry and is F.Port compatible. Inverted S.Port and S.Bus solder-pads are available but really small. The pictures show size comparison between R-XSR, XM+ and XSR-E (XSR-M) receivers.

Smaller than everything on the market and with full telemetry via smartport. The best.

Smaller than everything on the market and with full telemetry via smartport. The best.

Smaller than everything on the market and with full telemetry via smartport. The best.