User's Manual

D-306217 GB-502 PG2 Installation Instructions 2
PowerG Transmitter
Upon alarm (glass break detection), a digital message is transmitted, composed of the PowerG ID followed by various status and message-type mark-
ers. Alarm and other data are thus forwarded to the wireless alarm control panel.
The GB-502 PG2 is protected by a back tamper switch that is activated when the cover is removed or when the base is forcibly detached from the wall.
In a tamper situation, a message is transmitted with the “tamper alert” marker ON.
A periodic supervision message, distinguished by a specific marker, is transmitted automatically. The wireless control panel is thus informed, at regular
intervals, of the sensor’s active participation in the system.
A bicolor LED lights whenever events are reported. The LED does not light while a supervision message is being transmitted.
Installation
Optimizing Detection and Avoiding False Alarms
For best detection, avoid installing in:
l Rooms with lined, insulating, or sound deadening drapes.
l Rooms with closed wooden window shutters inside.
For best false alarm immunity:
l Avoid 24-hour loop applications (perimeter loop OK).
l Don't use where white noise, such as air compressor noise, is present (a blast of compressed air may cause a false alarm)
l Avoid rooms smaller than 3 x 3 m (10 x 10 ft) and rooms with multiple noise sources such as small kitchens, glass booths noisy areas, garages,
small bathrooms, etc.
Areas to avoid:
l Glass airlocks and glass vestibule areas
l Noisy kitchens
l Residential car garages
l Small utility rooms
l Stairwells
l Small bathrooms
l For glass break protection in such applications, use shock sensors on the windows or window frames.
Do Not Install In Humid Rooms
The Wireless GB-502 PG2 is not hermetically sealed. Excess moisture on the circuit board can eventually cause a short and a false alarm.
Avoid 24-Hour Loop Applications
The GB-502 PG2 is recommended for perimeter loops and is designed to function in an occupied area. In 24-hour loop applications, where the sensor is
armed all day and all night, the false alarm prevention technology will be pushed to its limit. Some sounds can duplicate the glass break pattern the
acoustic sensor detects.
Installthe GB-502 PG2 on a perimeter loop which is armed whenever the door and window contacts are armed.
NOTE: GB-502 PG2 shallbe installed in accordance with the Standard for Installation and Classification of Burglar and Holdup Alarm Systems, UL 681
Protecting Occupied Areas
The false alarm immunity is best in rooms with only moderate noise. For 24-hour occupied area protection, use shock sensors.
Proper Testing
The GB-502 PG2 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 sensor 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.
NOTE: GB-502 PG2 may not consistently detect cracks in glass, or bullets which break through the glass. Glass-break sensors should always be
backed up by interior protection.
For best false alarm immunity the sensor should be located at least 1.2 m (4 ft) away from noise sources (televisions, speakers, sinks, doors, etc.). The
sensor must always be in direct line of sight of all protected windows. It cannot consistently detect glass breaking around corners, in other rooms, etc.
Front or back, up or down orientation is not necessary.
Sound Travel Considerations
Since the sound of breaking glass travels directionally out from the broken window, 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. When mounted on the opposite wall, the detector should be mounted
at least 1.8 m (6 ft) off the floor, but not less than 30 cm (12”) from the ceiling. The ceiling also has good sensor locations. A ceiling mounted sensor will
have better detection ifpositioned 2 - 4 m (6 - 12 ft) away from the protected glass into the room. Corner and adjoining (side) wall mounting is