Frequency Transducer/Pulse Counter, 2-channel, ATEX, IECEx, cFM, cUL, NEPSI, INMETRO, KOSHA, TR CU EAC CMI, TIIS, Installation in zone 2, SIL 2, Input circuits monitored for wire-break and short-circuit, Parameterized via PC, Complete galvanic isolation, Input reverse-polarity protected, Removable spring type terminals