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 channelNon- Version: 6/16CH (Telemetry) Version: 6/16CH (Telemetry) / 6/16CH (No Telemetry)With RSSI Output : Analog 0-3.3VOperating Voltage Range: DC 3.5V-12.6V (1-3s Li-Battery)Operating Current: 100mA@5VOperating Range: up to 10km or aboveCompatibility: R9M Lite/R9M/R9M 2019 with ACCST firmware; R9M Lite/R9M Lite Pro/R9M 2019 with ACCESS firmwareFEATURES:ACCESS Protocol and support OTA functionsLow latency and high precisionSupport S.Port / F.Port (Configurable in OpenTX / FrOS menu)With inverted SBUS and S.Port outputsBattery voltage detection supportedDetachable Ipex1 connector antennaDue to different product batches, the appearance , which does not affect the use.Colour:As ShownMaterial:PC+PlasticPackage Contents:1 * R9 Slim+OTA Receiver KitOnly 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.