Simon XT Installation Manual 11
Cross-zoning
Cross zoning (two-trip) refers to two different group 18 sensors that must be
tripped within two minutes of each other to report an alarm to the central station.
Figure 2 on page 12 shows the path of a person walking from the kitchen to the
living room. When the person is detected walking through the kitchen, the motion
sensor in the kitchen is tripped, sounding a local alarm. If motion is detected by
the living room motion sensor within two minutes, an alarm report will be sent to
the central station.