Fast and easy-to-use ATR120 Electronic Time Clock features automatic card positioning and weekly or biweekly pay periods. Can be set to print "late in" and "early out" punches in red for easier card editing. Simply insert the card in the top slot, and the time clock will position the card, print the date and time, and eject the card. A built-in battery backup and automatic Daylight Saving Time adjustments help ensure the clock maintains the correct time. Add the available NiCD battery pack, andyour employees will be able to punch in and out (up to 200 punches) even when the power is out. This clock is designed to be used for time and attendance recording in a professional office environment. A built-in programmable buzzer notifies employees of stop and start time.