SENTROL Application notes - Alarms BC

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Commercial Applications
APPLICATION
INSTALLATION
RECOMMENDED
PRODUCTS
PROTECTING ROOMS WHEN CLEANING CREWS
ARE PRESENT
Often, the perimeter loop of the security system is armed when cleaning crews are
in a building. If acoustic sensors are armed, they will be listening to all sounds,
including those made by night cleaning crews. Acoustic sensors are most likely to
false alarm to multiple sounds. The cleaning crews produce a combination of
sounds from vacuums, floor polishers, and clattering garbage cans, all of which
combine to cause false alarms for some sensors in some applications.
Shock sensors provide the best false alarm immunity for a building when it is
occupied. Shock sensors are often economically impractical, however, due to the
number of windows to be protected. Also, in applications where appearance is
important, the use of multiple shock sensors may not be an option.
Sentrol’s ShatterPro Plus 5885 provides an acoustic solution to noisy cleaning
crews. The 5885 is a motion sensitive acoustic sensor that combines a passive
infrared sensor with a glassbreak sensor. When a noisy occupant enters the field of
view of the PIR the glassbreak sensor is disabled for 70 seconds. This prevents
false alarms due to loud noises such as vacuums or floor buffers. The glassbreak
sensor is activated after the occupant leaves the field of view. The 5885 makes 24
hour acoustic applications possible.
For false alarm immunity when night cleaning crews are present, the ShatterPro
Plus 5885 will provide trouble-free performance in most applications. Other
reliable solutions are shock sensors like the 5120 or 5414.
GLASSBREAK SENSORS
1.23