... audio on RCA connectors.3.Control Port.RS232, female 9-pin D connector. 4.Vedio Input/Output type.NTSC3.58,NTSC4.43 ... international power supply (110V-240V). Parameter Video Signal Composite Video Connector BNC Gain 0 dB Bandwidth 150MHz(-3dB),fully load Switching ... Ω Audio output Impedance 50Ω Control/Remote RS-232,9-pin female D Connector Pin configurations 2=TX,3=RX,5=GND Software Control ...