Counter Electronic Up/Down Number of Digits 8 Display 0.32 In LCD Black Numbers on White Background Counts per Second Low Speed Mode 0 to 40 CPS High Speed 0 to 500 CPS Input Signal 3 to 30 VDC Input Voltage Lithium Battery Mounting Rectangular Panel Mount Length 2 In. Depth 1.5 In. Width 1.1 In. Series 63 Min On/Off Pulse 12.5 mS In High Speed Mode 1.0 mS In Low Speed Mode mSec Reset Type Manual Front Panel