A multifunctional receiver from FrSky! RX8R, a receiver which has 8/16ch full duplex telemetry and redundancy functions!SpecificationsDimension: 46.25 x 26.6 x 14.2mm (L x W x H)Weight: 12.1gNumber of channels: 16CH (1-8ch from conventional channel outputs, 1-16ch from SBUS port or combine two RX8R to become a 16 channels receiver)With RSSI output on board: analog 0-3.3vOperating voltage range: 4.0-10VOperating current: 100ma@5vOperating range: full range(>1.5km)Firmware upgradeableCompatibility: FrSky radios/transmitter modules in D8/D16 mode