The versatile ES900 time stamp can be used to support time and attendance, job costing and document control and is designed for a professional office environment. No resetting needed: The ES900 time recorder synchronizes automatically with time codes transmitted by the National Institute of Standards and Technology, keeping it incredibly accurate. The internal battery backup keeps the clock on time, even during power outages. Flexible options: With over 300 possible print configurations and 13 preset messages in your choice of six languages, the ES900 easily supports a wide variety of time & attendance document control applications. This time stamp accommodates virtually any time card, document or form, offering adjustable print font size, your choice of automatic, semi-automatic or manual print operation, and left or right hand print. The power supply is switchable from 124V to 240V. Easy to use: Cards and documents are a snap to align correctly, thanks to a handy window in the cover and a bright internal LED illuminating the document print area. In addition, the ES900 is protected with a user-selected four digit numeric password. For your additional safety and peace of mind, the ES900 clocks are UL-approved.