Preset Counter, Number of Digits 6, LCD Display, Character Height 0.157 in Bottom, 0.275 in Main, Max. Counts per Second 35 Hz, Input Signal 100kOhm Input Impedance, Optocoupled; Open or 0 to 2V (Low); 12 to 250VAC/VDC High, Output Rating 2 A @ 30VDC (Relay), Output Relay, Mounting Clip, Diameter Not Applicable, Height 2.95 in, Width 2.36 in, Preset Yes, Power Required (2) 3V Lithium Battery, Min. On/Off Pulse 50 msec, Prescaling Range 0 to 999,9999, Reset Type Push Button