N4/1U-M 4CH H.264 DVR Network HDD Digital Video Recorder, Support VGA / RJ45 NET / USB 2.0(Black) Type-Exterior Accessories it can be directly connected

it can be directly connected to an Android phone via OTG

- Waterproof ring x 1

When the machine detects insufficient light

1 seconds or less

N4/1U-M 4CH H.264 DVR Network HDD Digital Video Recorder, Support VGA / RJ45 NET / USB 2.0(Black) Type-Exterior Accessories it can be directly connected1. P2P cloud service, including cloud connecting, cloud monitoring, cloud transmitting to access IPC and NVR at any time and any place 2. Support onvif protocol, support High profile S, High profile G, compatible with different IP camera that based on Onvif, RTSP standard 3. Support megapixel HD network video preview, storage and playback; 4. Support search, playback and backup by event; 5. Support all channel image display on one screen at same time,