Installation; Choosing A Location - Radio Shack Invisible Beam Entry Alert Owner's Manual

Caution: Home security systems require a permit in some ar-
eas. Check with your local law enforcement agency before you
install your system.
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Installation

CHOOSING A LOCATION

This alert is designed for indoor operation only. The distance
between the alert and the reflector should be between 2.7–50
feet.
Position the alert on a desk or counter top, within 6 feet of an
AC outlet. The outlet should always be on (not controlled by a
wall switch) so the alert will not be accidentally turned off.
Position the reflector so it correctly reflects the beam from the
alert. If you cannot mount the reflector directly across from the
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Installation