CARD; TYPE: DIGITAL INPUT; VOLTAGE (V): 48-60VDC; ADDITIONAL CHARACTERISTICS: ELECTRONIC, DI-2112 FOR RTU AK3 8X8, 64 SINGLE POINTS, 32 DOUBLE POINTS, 64 COUNTING PULSES, 1MS RESOLUTION, GALVANICALLY ISOLATED INPUTS, COMMON RETURN, 64 INPUTS (8 GROUPS), CHILE SUPPORT WARRANTY 1 YEAR; SUGGESTED BRANDS: SIEMENS 6MF1013-0CB13-0AA0