RFID TAG 125kHz EM designed as Adhesive plast plate, round 25 x 1.7 mm. IP68

The most commonly used 125 kHz transponders - also called tags - are of the "read only" type - that is, they are provided with a unique ID code of up to 40 bits that cannot be changed. tags are available in a variety of configurations. For example round pieces in various sizes and formats, fobs and credit cards. Here only the most popular types.