BL20 electronic module, 2 RFID channels (HF/UHF), cable length 50 m, independent of the field bus used and the selected connection technology, protection class IP20, 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