DIN-rail access control module is the central module of the 2-wire Niko access control installation. It directly connects the external video unit(s) with the touchscreen(s) and/or the internet for use with the Niko access control app. The power supply module provides an input voltage of 24 V dc to the bus. The DIN-rail controller can be connected to five internal video units (510-50000) and two external video units (510-31001). It is connected to the internet using a UTP cable to the router. This allows the user to control the installation both indoors and outdoors (via mobile networks such as 3G, 4G or Wi-Fi) via smartphone (Android or iOS) and ensures time stamps for all connected touchscreens and video units. The chime and door locks can be connected to the access control module (recommended). The module has a RESET button to restart all connected devices. Each installation must consist of one access control module. You can register your external video unit via the Niko access contr