The EM4103T is a read-only transponder tag manufactured by ABB that operates at a frequency of 125 KHz. It uses the EM4103 chip, an Electromagnetic ASIC, to store data that can be read or encoded with a compatible RFID reader. The tag can be programmed to store 4kbits of information, which can be used for asset tracking, inventory control, access control, and other applications. The EM4103T is designed to be mounted either on metal surfaces or on a variety of non-metallic materials. It is also resistant to water, oil, chemicals, and temperatures ranging from -40 to +85 degrees Celsius. The tag measures 17.71 mm x 21.2 mm x 3 mm and can operate at a read range of up to 10 cm.