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2.2 Installation
Notice
1. AR-721U is narrow enough to mount to most mullions and door
frames.
2. Single door controller locate inside the secure area for use as an
exit controller, the auxiliary reader locate exterior wall for use as
an entrance reader, but not directly behind single door controller.
For best reading distance, offset the single door controller and
auxiliary reader by about 50 cm above and 12 m below
(suggestion value).
3. Normally, AR-721U will read a Card / Key Tag at up to 8 cm.
However, when AR-721U reader is mounted directly on a metal
surface, the reading distance decreases slightly. To reduce this
effect, install wood or plastic between the mounting surface and
mounting plate, this will restore most of the reading distance.
