The fingerprint access controller series S-510 is a low-end model with an international design. It was originally a mainstream export model. This machine has good recognition performance for different fingerprint characteristics (elderly, children, men, women, northern people, southern people, damaged fingerprints, etc.), with more than 40 million people's use records and a history of use in more than 30 countries worldwide. It can store up to 2200 fingerprints and 80,000 records, and does not require real-time connection to a computer. The fingerprint time attendance machine communicates with the computer via RS232 or RS485; it is suitable for enterprises with a staff of less than 100 people.