Specifications

Appendix B: Transmitter Installation
PIR Sensors (MS845)
The MS845 are intelligent wireless PIR sensors for use with the ProGuard800 system. All of
these sensors implement a feature to combat the problem of multiple transmissions, which
drastically reduce the life of the batteries. After each transmission, there is a four-minute
delay during which further transmissions will not be sent.
The MS845 are designed for installations prone to nuisance alarms caused by pets or
small animals.
Considerations Before Installation
x Select a location from which the pattern of
the detector is most likely to be crossed by a
burglar, should there be a break in.
x Do not place bulky objects in front of the
detector.
x Avoid a location which comes in direct
contact with radiators, heating/cooling ducts,
mirrors and air conditioners.
x Select an appropriate installation height
from Table B1.
Pet Immunity Guidelines
It is expected that the MS845 will eliminate false alarms caused by:
x Animals up to 45kg (PI)
x Several small rodents
x Random flying birds.
1
The weight of the animal should only be used as a guide, other factors s
u
the length and color of fur also affect the level of immunity.
For maximum pet immunity the following guidelines are recommended:
Lens Mounting
Height
Standard 2.2m (6.6’)
Long
Range
2m (6.5’)
Curtain 1m (3.25’)
Animals 2m (6.5’)
Table B.1: Recommended Mounting Height
Tamper
Switch
LED
Jumper
Mounting
Hole
LED
Indicator
Easy
Lock
Battery
Holder
Mode
Jumper
Pulse Count
Jumper
Antenna
Vertical
Adjustment
Scale
Pyro
Sensor
ProGuard800™ -93-