Upgraded 2.4G 6CH S603B DSM2 DSMX Compatible Receiver With Data Back Function Upgraded 2.4G 6CH S603B Receiver Features Supported JR Spektrum DSM-X and DSM2 transmitter. S603B with date back function, can pass back the voltage and temperature. Extra satellite is not needed,more convenient. Using special 3dbi gain antenna,with amplifier of 15dbi gain insided. Supported PPM […]