The TD52 Video Intercom is simple to install and can be online in minutes. No additional phone line integrations, NVRs or DVRs are needed to connect your Verkada intercom system. The Verkada TD52 is a single PoE device that includes powerful two-way audio, video intercom and video security capabilities. The TD52 also has inputs and outputs to interface with existing door hardware or third-party access controllers. More information on how to install the device can be found at here.