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6-5. Cautions during Installation
6-5-1. When installing SR10RW on metal Frame
Read range will be reduced if located on metal surfaces or in the vicinity of metal objects. The
amount of reduction will be a factor of the amount of metal and the distance the Reader is from
the metal. Metal near the Reader absorbs energy from the Reader excite field and affects the
signal being received from the card by re-directing excite field transmissions into the receiver
circuitry. Moving the Reader away from the metal objects reduces energy loss.
Try to limit the amount of metallic materials installed near the SR10RW.
Use a plastic electrical box if possible.
When installing the Reader on metal door frame, add Isolation Spacers between the Reader and
metal door frame. If you do so, read range reduction can be improved.
The typical read distance specification (2-4 inches at 12VDC) refers to operation without metal in
the vicinity of the Reader.
The read distance will be reduced if metal is installed nearby. The SR10RW generate a magnetic
field on all sides of the Reader. Any metal that conducts electricity, especially metal that contains
iron, steel or copper will interfere with the field and reduce the effective spacer between the
Reader and the metal object.
6.5.2. When installing two readers side by side or back to back
Read range is not affected if the side by side distance between two readers is equal to
or greater than eight inches (20cm). If the distance between the two readers is less than
eight inches (20cm), field interference between the two readers may result in a double-
badge read.
When installing two readers back-to-back on a wall that will separate the two readers by
Two readers can simultaneously read the same badge or tag if the distance
between the two readers is less than 8 inches (20cm), side by side.
Note