This module connects the 2N IP intercom reader to a third-party access control system, communication between the 2N reader and the controller is through OSDP protocol, higher security than Wiegand protocol, data encryption, this module is mainly designed for the IP Verso and IP Style, but can also be used with 2N Access Unit 2.0, for IP Verso and the IP Verso LTE please install this module under another module (e.g. RFID card reader, Bluetooth reader, keypad), for the IP Style intercoms and 2N Access Unit 2.0 readers, the OSDP module must be placed outside the device