Mounting, Avoiding false alarms – Interlogix 5812A Series (SPRES) User Manual

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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. Glassbreak sensors cannot reliably detect breaking

glass around corners or in other rooms.

Wall Mounting

The best location for mounting the sensor is on the opposite wall

— assuming the glass to be protected is within the sensor’s range

and line of sight (see figure). The ceiling and adjoining (side)

walls are also good sensor locations.

Pre-Wire Installation for the SPRES-EZ

1. Place the SPRES-EZ 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.

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 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).

•

Don’t 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

™

Residential or a ShatterPoint (model 5600, 5620).

Proper Testing

The ShatterPro Residential 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 Residential 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 Residential 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 Residential detects.
Install the ShatterPro Residential on a perimeter loop which is

armed whenever the door and window contacts are armed.
Protecting Occupied Areas

The ShatterPro's 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 Residential 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 Residential 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

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).

AVOIDING FALSE ALARMS

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