The 900MHz R9 Slim+ OTA receiver implements the ACCESS protocol and supports wireless firmware updates over the air making binding to receivers even easier. As well as the convenience of checking the current receiver firmware version.

The R9 Slim+ OTA is designed with dual antennas to improve signal strength. With a compact form factor design, it also features 6 PWM outputs, and this long range receiver with the flexibility to work with more external devices by incorporating the inverted SBUS and S.Port outputs.

ACCESS Protocol and support OTA functions

Low latency and high precision

Support S.Port / F.Port (Configurable in OpenTX / FrOS menu)

With inverted SBUS and S.Port outputs

Battery voltage detection supported

Detachable Ipex1 connector antenna

Dimension: 32*13.5*5mm (L × W ×H)

Weight: 4.3g (with antennas)

Numbers of channel

LBT Version: 6/16CH (Telemetry) / 6/16CH (No Telemetry)

With RSSI Output : Analog 0~3.3V

Operating Voltage Range: DC 3.5V~12.6V (1~3s Li-Battery)

Operating Current: 100mA@5V

Operating Range: up to 10km or above

Compatibility: R9M Lite/R9M/R9M 2019 with ACCST firmware

R9M Lite/R9M Lite Pro/R9M 2019 with ACCESS firmware