1080P AHD/ CVI /TVI/ CVBS 960H 4 in 1. Switch to TVI: Press&Hold Leftward for 10 Seconds. Switch to CVI: Press&Hold Downward for 10 Seconds. Switch to AHD: Press&Hold Upward for 10 Seconds. It supports HD-TVI, HD-CVI, and AHD 2MP 1080P High Definition Technoogies.
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