Introduction
1
Introduction
The Wiegand Interface Unit-Four State (WIU-4) board
features a Wiegand to F/2F data converter, which can
accommodate both conventional and proprietary Wiegand
reader protocols, and includes an 8 Amp relay for door
strike control (entrance/exit) activity. It provides the
communications interface that enables support of up to 16
Wiegand-output readers.
When combined with most conventional Proximity, Mifare
®
,
and ISO-15693 Wiegand-output readers, the WIU-4 reports
immediate alarm notification of short circuit, cut line, open
circuit, or closed circuit conditions to the access control
system.