ES900 Overview The full-featured ES900 time recorder can be used to support time and attendance, job costing, and document control and is designed for a professional office environment. With over 300 available print configurations, including 13 preset messages in your choice of six languages and an option for automatic consecutive numbering, the ES900 is suitable for a wide variety of business applications. The ES900 atomic time recorder synchronizes automatically with time codes transmitted by the National Institute of Standards and Technology, keeping it incredibly accurate with no resetting necessary. Thanks to internal battery backup, the clock maintains the correct time during power outages. Install an optional NiCd battery, and you can keep using the ES900 even when the power is out! The large, easy to read LCD display indicates the date, time and day of week. Cards and documents are a breeze to align correctly. The highly versatile ES900 works with a wide variety of documents and cards with quality printing every time. The power supply is switchable from 120V to 240V with the flick of a switch, allowing the ES900 to work with different voltages throughout the world. Your clocks programming is protected with a user-selected four-digit numeric password. For your additional safety and peace of mind, these clocks are UL-approved.