10.1-inch IPS touch screen with resolution: 1280 x 800. Up to 128 network cameras can be added to the device. Built-in SIP private server, up to 10000 video intercom devices can be added. Supports more than 2 speakers and microphones: Connects to external earphone (3.5mm), external goose neck microphone. Displays operation pages via HDMI. Power supply: standard PoE & 12 VDC. Video intercom and access control functions.