Upgraded 2.4G 6CH S603B DSM2 DSMX Compatible Receiver With Data Back FunctionDescription:Item Name: S603B  ReceiverFrequency: 2.4GHzChannel: 6CHProtocol: DSM-X(Supported DSM2)Input Voltage: 4.8-8.4VWeight: 12gSize: 47*24*14mmFeatures:- S603B with date back function、 can pass back the voltage and temperature.- Using special  3dbi gain antenna、with amplifier of 15dbi gain insided.- Stronger anti-interference、further distances( up to 2km)- Supported PPM channel- Extra satellite is not needed、more convenient.- Supported JR Spektrum DSM-X and DSM2 transmitter.Package Included:1x 2.4GHz S603B 6Ch Receiver