2N RFID Card RFID EM4100, 125 kHz. 1 piece. Simply secure with 2N. 2N is a leading European company in the development and manufacturing of information and communication technology as well as security products. It is a global market leader in the field of IP intercom systems. All products meet strict international standards and are compatible with third-party systems. The product lines from 2N include, among others, IP intercom systems for door communication and emergency calls, as well as IP audio systems designed to make life easier and safer. In 2016, 2N was acquired by the Axis Group.