The zkteco zk f18 biometric fingerprint standalone access control & time attendancehas the following features:
stores 3000 templates, 5,000 cards and 30,000 transactions
reads fingerprint and/or card
optional integrated smart card reader
built-in serial and ethernet ports
tamper-proofs switch and alarm outputs
request-to-exit and alarm contacts
audio-visual indications for acceptance and rejection of valid/invalid fingers