2N IP Force Induction Loop transfers audio from the intercom to the person who is wearing a hearing aid. With this accessory, the intercom meets the requirements of the IEC 60118-4 standard, which you often must satisfy in public projects. The loop is inside the intercom, protecting it from rain and vandalism.
2N IP Force Induction Loop can only be used in versions of the 2N IP Force intercom which are ready for use with an RFID reader (9151101RPW, 9151101CRPW, 9151101CHRPW, 9151102RW, 9151102CRW 9151102CHRW). If you use the induction loop, you cannot put an RFID card reader inside the intercom.