BL20 electronic module, 2 RFID channels (HF/UHF), cable length 50 m, independent of the field bus used and the selected connection technology, no special software (function block) is required for integration into the PLC systems, 8 bytes of user data per read/write cycle, LEDs for displaying status and diagnostics, electronics galvanically isolated from the field level via optocouplers, connection of two BL ident read/write heads (HF or UHF), mixed operation of HF and UHF read/write heads, transmission rate: 115.2 Kbit/s, cable length: max. 50 m