... use to ExtendOutput I/O1 port (Control car engine)Microphone3.5mm Single trackearphone3.5mmCurrentStandby Current:16mAworking Current:60 ... hours)Accessoriesdevice, Connecting cable ,GPS antenna ,GSM antenna, Engine controller, SOS button, MicrophonePorts:RES: Reset Button1: DC(12V ... 12V)5: Cut off Power/oil6: GND7: SOS8: RESET 9: None10: NoneSIM: SIM CardPHONE: SpeakerMIC:Listen MICLED1: Power ...