Setup Alarm Input Output on Hikvision DVR NVR PIR Door Contact Detection Notification Siren Buzzer - YouTube
HIKVISION DVR 4 channels DS-7104HUHI-K1 H.265 Pro+/H.265 Pro/H.265/H.264+/H.264 encoding Self-adaptive HDTVI/HDCVI/AHD/CVBS signal input 1 SATA support HDD Up to 6 TB HDMI output at up to 4K (3840 × 2160) - iTechcsn