... PasswordVisionVideo input4-CH video input, 1.0Vp-p,75Ω, in car aviation connectorVideo output1-CH video & audio output, 1. ... 0Vp-p,75Ω, in car aviation connectorPreviewSupport 1 channel or 4 channels synchronous preview. ... input4-CH Audio input, 600Ω, in car aviation connectorAudio output1-CH Audio output, 600Ω, in car aviation connectorRecording modeAudio & Video synchronous ...