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. Dimension: 32x13.5x5mm (L x W x H) Weight: 4.3g (with antennas) Numbers of channel Non- Version: 6/16CH (Telemetry) 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 FEATURES: 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 Due to different product batches, the appearance , which does not affect the use. Colour:As Shown Material:PC+Plastic Package Contents: 1 * R9 Slim+OTA Receiver Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.