ZKTeco SF420-W IP Based Fingerprint Terminal
SF420-W is an IP based fingerprint terminal for access control and time attendance management.With Wiegand output, SF420-W is flexible to connect with ZK or any 3rd party controllers as a slave reader. Wiegand input configures two SF420-W units to utilize Master & Slave solution to enable users verification at both entrance and exit. Antipassback function is also enabled to maximize the security level. Auxiliary input interface allows SF420-W to connect with an extra source, for instance, a smoke detector or emergency switch. Once the linkage function is enabled through the machine menu, the device generates an alarm signal and opens doors in case of emergency.