Mounting the reader 9
Back-to-back readers
Models 941, 971 and 973 Readers are suitable for back-to-back
installation (to provide in/out access control). Using the standard
metal mounting plates, the two readers should be mounted with
their centers offset by at least 10 inches to provide interference-
free operation. Using the optional back-to-back metal mounting
plates allows the two readers to be mounted directly opposite
each other on a 4-inch thick wall.
External tamper feature
The Model 94x/97x Readers are also equipped with an external
tamper feature. This feature can be activated by removing the key
on the backplate prior to mounting.
Model 94x only: Apply the mounting method as shown in
Figure 1, Recommended Additional Mounting Instructions for
External Tamper Switch Activation to mounting instructions in
Figure 2, "Model 940 Reader - Gang Box Mounting" Figure 3,
"Model 940 Reader - Direct Wall Mounting" Figure 4, "Model
941 Reader - Gang Box Mounting" and Figure 5, "Model 941
Reader - Direct Wall Mounting" if you are using the external
tamper feature.
Note: In order for this feature to work properly, the reader mounting
surface must be flush with the backplate.