26Caution:• FOR UL LISTED MODEL(S), ONLY CONNECT 12 V DC CLASS 2 POWER SUPPLY.Turn off a circuit breaker before making a connection. Before starting the connection, prepare therequired devices and cables.Note:• When using the mount bracket (accessory), it is possible to connect the cables after mountingthe camera onto the mount bracket.• Refer to page 20 when connecting the conduit.ConnectionNetwork cable* PAL model only* PAL model only RJ-45 (female)Alarm input/output cable 4P alarm cable (accessory)Power cable(12 V DC)2P power cable (accessory) 12 V DC (red)GND (black)Microphone/line input cable (white)Audio output cable (black)Power cable12 V DCRed PositiveBlack Negativez Connect the microphone/line input cable and the microphone (for use of the audio receptionfunction).Input impedance: 2 kΩ±10 %Recommended cable length: Less than 1 m {3.28'} (for microphone input)Less than 10 m {32.8'} (for line input)Recommended microphone: Plug-in power type microphone (option)Connect a mini plug (ø3.5 mm).Supply voltage: 2.5 V ±0.5 VRecommended sensitivity of microphone: −48 dB ±3 dB (0 dB=1 V/Pa,1 kHz)Important:• Connect/disconnect the external speaker cables or audio/video cables after turning off thepower of the camera and the amplifier. Otherwise, loud noise may come out from the speaker.