Frequency Transducer/Pulse Counter. 2-channel. Ident. no.: 7580209. Input circuits monitored for wire-break and short-circuit . Parameterized via PC. Complete galvanic isolation. Input reverse-polarity protected. Output circuits monitored for wire break and short circuit. ATEX, IECEx, cFM, cUL, NEPSI, INMETRO, Kosha, TIIS,. Use in Zone 2. SIL 2