... , emergency signal and other indexing signals in electric power, telecommunications, machine tool, ship, textile, printing, ... . Rated voltage: 6V, 12V, 24V, 110V – AC/DC; 20V, 380V, 440V/AC Main technical parameters ·power frequency withstand voltage: 2. ... 5 KV (ac effective),1min·insulation resistance ≥ 2MΩ·ac ...