Safetell Interlocking Door Modules are bullet and attack resistant and designed to
securely control the access of persons from one area to another; typically from a public
area to a secured area such as an office, reception, jewellers, or other at risk area.
The outer door can only be opened when the inner door is secured, and similarly the
inner door can only be opened when the outer is secured. The Safetell Interlocking Door
Module contains tailgate detection systems that prevent the inner door from opening
when more than one person attempts to pass through the interlock.