This Reolink 36-channel network video recorder (NVR) can be connected simultaneously with 36 cameras, which support a resolution of up to 12 MP. In addition, it also has additional alarm input and output channels, with which you can set different detection and reaction modes.The large amounts of data can be securely stored on three hard drives* with a maximum capacity of 16 TB each, and WAS provides a total storage capacity of up to 48 TB. The system can be managed centrally and easily, to add more surveillance cameras, record video recordings round the clock and store them over long periods of time.* Hard disks are sold separately.The built-in audio ports allow two-way conversation via the NVR**. You can respond immediately to suspicious visitors or communicate live with the local people.** This feature supports Reolink cameras with microphone & speaker.8 Alarm input channels to connect additional wired sensors (temperature, IR, magnetic sensors, etc.) to record separate events; 4 Ala