Extreme Blue Enhanced System Specs and Requirements Timeclock • • • • • Weatherproof, impact-resistant ABS case—the same kind of plastic used in baseball batting helmets. Steel mounting plate fixes the timeclock to wall; latch for padlock keeps it there. Up to 2,000 employees, 12,000 transactions per clock, multiple clocks per system. Audible and visual signal when employees clock in and out. W x L x D : 3.75” x 7.25” x 1.75”; weight: 1 lb. 2.5 oz.