This module ensures the connection of the IP 2n intercom reader with third -party access systems. The communication between the 2n reader and the controller takes place through OSDP protocol, which guarantees greater security than the Wiegand protocol and, at the same time, encrypts the data to be transmitted. The OSDP module is primarily intended for 2N® IP intercoms to E 2N® IP Style, but it is also possible to use it with intelligent 2n access unit 2.0 readers.