Wiegand Interface Unit Four State (WIU-4)
Installation Manual
2
Safety
Radio interference
Electrostatic discharge (ESD) precaution
WARNING: This is an FCC Class A product. In a domestic
environment, this product may cause radio
interference, in which case, the user may be
required to take adequate measures.
WARNING: Circuit board components are vulnerable to
damage by electrostatic discharge. ESD can
cause immediate or subtle damage to sensitive
electronic parts. An electrostatic charge can
build up on the human body and then discharge
when you touch a board. A discharge can be
produced when walking across a carpet and
touching a board, for example. Before handling
any board, make sure you dissipate your body’s
charge by touching ground. This discharges any
static electricity build-up.