REDINGTON 3400-0000 Electronic Counter, 8 Digits, 3 Preset, LCD. More details: Electronic Counter, Number of Digits 8, LCD Display, Character Height 0.28 In. Black Numbers on White Background, Max. Counts per Second 40, Input Signal 10 to 300VDC, 20 to 300VAC (50/60 Hz), Output Rating 0.1A @ 30VDC, Output Open-Drain MOSFET, Mounting 2-Hole Rectangular, Height 1.10 In., Depth 1.09 In., Width 1.43 In., Series 34, Scaler No, Preset 3, Power Required Self Powered (15+ yr. Battery), Min. On/Off Pulse 1 msec, Prescaling Range -, Reset Type None, Interface None