The VN 2000 series bill acceptor is widely known as the best validator on the market. The VN-2501 is most commonly used in vending machines. This unit DOES NOT have a "flashport", which means it can't be upgraded for new currency updates. These validators will take all versions of the $1 bill, and some very old versions of the $5 bill that really aren't around anymore.
MEI holds the world's largest installed base of unattended payment systems, handling over 2 billion transactions per week in more than 100 countries. The company developed the first electronic coin mechanism in the 1960s, followed by the first electronic non-contact bill validator, and more recently its credit card capability and vending management solutions software.
MEI payment systems' technology is considered the most reliable choice in hundreds of real-world applications and has earned the best performance rating in the market. Through its commitment to quality and innovation, MEI continues to provide the highest reliability and state-of-the-art products for the vending, gaming, amusement, transportation, retail and kiosk markets.