Vetro Timeclock System: Specs and Requirements Timeclock • • • • • • • • • Plastic housing with polycarbonate capacitive touchpad and LCD screen When touched, LEDs behind touchpad illuminate to indicate buttons Two iButton probes: One for clock-ins and one for clock-outs. No moving parts. Up to 500 employees, 12,000 transactions per clock, multiple clocks per system. USB port on right side of clock.