Electrical Counters: Counter Type - Electronic Rate Indicator; Application - Rate Indication Time Based; Digits - 6 14.2 mm H - LED; Count - max - 999999; Speed - 10 kHz Max; Operator - Micro-Processor; Voltage - 24VDC; Connection - Terminal Block; Mounting - Panel; Dimension - 3.80 in W x 1.95 in H x 4.20 in D; Additional Information - Scale for direct read out feet/min, gallons/hour Time base range: 0.004 to 32.764 sec; Manufacturer Series - Apollo APLR