... indicator - Composite video output - Software upgrade via RS-232 serial port, STB to STB - Forcible PAL/ NTSC conversion - Standby with low ... ModulatorPAL_BG,11CH. RCA Output4RCA(cvbs,audio_l,audio_r,RFoutput)RS232 Serial PortSIP2.0_4P, outside RS232 converter board for upgrade softwareRCU CategoryIR(Carrier 38KHz ...