Totalizing time clock bundle includes everything you need to track up 50 employees on a weekly, bi-weekly, semi-monthly or monthly payroll period, or it can be used for job costing. Best of all, it automatically calculates and totals employee work time for accurate record-keeping. You can set overtime thresholds, choose to implement rounding rules, and automatically deduct break times to accommodate your organization's payroll rules. Use the built-in programmable buzzer or connect to an external signal device (relay box sold separately) to notify employees of shift start and stop times. Built-in battery maintains the time and allows employees to punch in and out, even during a power outage. For added peace of mind, the clock's programming can be password-protected, and the clock case is secured with a lock and key. Bundle includes a clock, 200 time cards, two 10-slot time card racks, two ribbons and four case keys.