Mounting, Surface mount, Recessed – Interlogix 5820A Series User Manual
Page 3: Pre-wire installation for the 5812ez, Avoiding false alarms

MOUNTING
Locate sensor at least 4' from noise sources (TVs, speakers, sinks,
doors, etc.), and at least 3.3' away from nearest point of glass to
be protected.
Sensor location should be in direct line of sight of glass to be
protected.
Surface Mount
Wall Mounting
The best location for mounting the sensor is on the opposite wall
assuming the glass to be protected is within the sensors range
and line of sight (see figure). The ceiling and adjoining (side)
walls are also good sensor locations.
Ceiling Mounting
Mount the sensor in any type of ceiling in a location which is in
direct line of sight of the windows to be protected. However,
since sound travels directionally out from the broken window, a
position 8' (2.4 m) into the room provides better detection (see
figure).
Recessed
Wall or Ceiling Mount
Drill 1" (2.5 cm) hole. (Spade bit makes cleaner hole than
twist bit.) (Drill 1-1/16" (2.7 cm) hole for hard woods.)
Run wires through hole.
Connect wires to terminal as shown in wiring diagrams.
Do not install in rooms with ultrasonic sensors.
Pre-Wire Installation for the 5812EZ
Single Gang Box
1. Place the 5811EZ trim plate accessory over the single gang box.
2. Route wire through wire entry hole.
3. Mount the sensor to the single gang box using the screw holes
that align to the gang box.
4. Attach wires to terminal strip and snap front cover in place.
AVOIDING FALSE ALARMS
Areas to Avoid:
Glass airlocks and glass vestibule areas
Kitchens
Corner mounting
Residential car garages
Small utility rooms
Stairwells
Bathrooms
Other small acoustically live rooms
For glassbreak protection in such applications, use Sentrol
shock or ShatterPoint (model 5600, 5620) sensors on the
windows or window frames.
Do Not Install In Humid Rooms
No glassbreak sensor is hermetically sealed. Excess moisture
on the circuit board can eventually cause a short and a false
alarm.
For Best False Alarm Immunity:
Avoid 24-hour loop applications (perimeter loop OK).
Dont use where white noise, such as air compressor noise,
is present. (A blast of compressed air may cause a false
alarm.)
Avoid rooms smaller than 10' x 10' (3 m x 3 m) and rooms
with multiple noise sources such as kitchens, glass booths,
noisy areas, garages, bathrooms, etc.
In rooms less than 10' x 10', use a reduced-range ShatterPro
II, (models 5820A-W2, 5812A-W2), or ShatterPoint (model
5600, 5620).
Proper Testing
The ShatterPro II is designed to detect the breaking of framed
glass mounted in an outside wall. Testing the sensor with
unframed glass, broken bottles, etc., may not trip the sensor.
The ShatterPro II typically does not trip to glass breaking in
the middle of the room. No burglar breaks glass in the middle
of a room, so such breaks are false alarms.
Avoid 24-Hour Loop Applications
The ShatterPro II is recommended for perimeter loops and is designed
to function in occupied areas. In 24-hour loop applications, where the
sensor is armed all day and all night, the false alarm technology will be
pushed to its limit. Some sounds can duplicate the points on the
glassbreak pattern the ShatterPro II detects.
Install the ShatterPro II on a perimeter loop which is armed
whenever the door and window contacts are armed.
Protecting Occupied Areas
The ShatterPro IIs false alarm immunity is best in rooms with only
moderate noise. For 24-hour occupied area protection, use Sentrol
shock sensors or the ShatterPro
Plus 5885 or ShatterPoint (5600,
5620).
NOTE: ShatterPro II may not consistently detect cracks in glass,
or bullets which break through the glass. Glassbreak sensors
should always be complemented with interior protection.
Connection to Panel
The ShatterPro II should be connected to a UL Listed control
panel, or a power supply that provides at least four hours of
standby power.
D
D
D
is distance from glass.
The optimum performance zone
is distance D in either direction
on the glass.
ShatterPro
D'
≤
25'
Mounting location can affect the ShatterPro’s detection ability.
To ensure optimum performance, the ShatterPro’s coverage
zone width should be no greater than two times the distance
from the sensor to the closest point of glass. For instance, if
the ShatterPro is mounted 10 feet from the glass, its optimum
performance zone will be 10 feet in either direction of the “mid-
point” (see illustration above). ShatterPro can be mounted
from 3.3' to 25' from the farthest point on the glass.
Optimum
Detection
Zone