... mode: optional between DCE and DTEPower supply Conditions DC supply voltage: +24VDC, tolerance range: +24V±15%, ripple of power supply: ... ≤120mVp-p; DC supply voltage: -24VDC, tolerance range: -24V±15%, ripple of power supply: ... range: -36V~-72V, ripple of power supply: ≤ 240mVp-p; AC supply voltage: 220VAC±20%, 50HZ; tolerance range:90~-264V Power consumption: ≤ ...