Hiseeu 16CH Network Video Recorder for Home Security Camera System, Only Work with Hiseeu WiFi Camera

NVR is no audio output, need use HDMI cable to connect with HD TV, then allow to hear the sound, and make sure camera support audio function, two way audio need use cellphone app, which means system need connect with network. When u connect to network, it can only support 2.4G WiFi, not support 5G WiFi. Dual WiFi: Built in wifi between nvr and cam, the camera can be paired to Hiseeu NVR without network. Wi-Fi router - NVR (network video Recorder) is a recorder with built in router.