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Indoor Receiver Installation
Indoor receivers must be mounted in a evenly spaced grid no more than 80 ft. apart.
Indoor receivers must be mounted 1.5 to 1.8 m (5 to 6 ft.) above the floor. This is true even if this is a single
story building. Do not mount receivers above the ceiling or in roof rafters.
In multistory buildings the receivers must be mounted directly above the receivers on the floor below. The
same number of receivers must be used on each floor level. If you meet all of the indoor installation guidelines,
you can expect the computed location to indicate the correct floor about 95% of the time.
Receivers must not be mounted within 30 cm (1 ft.) of any metal object, including wire mesh, metal foil, metal
pipe and HVAC ducting in walls.
Take care that large metal objects do not shield a receiver from a protected area. For example metal
staircases, metal food serving lines, metal walls, lead lined walls, metal roofs, wire mesh in walls, walk-in
freezers and refrigerators.
For the best indoor and outdoor location or an indoor only system.
Mount the indoor receivers on the recommended 25 m (80 ft.) grid, with the last row of indoor receivers at the
outside wall of the building. Do this even if the building is less than 25 m (80 ft.) wide or long.
There should be a receiver at each of the outside corners of a building.
How to handle 2 protected buildings that share a common wall and have floor levels
that don't match
Ask the customer which building has areas of greater concern and favor the recommended mounting heights
in that building.
The recommended 80 ft. (25 m) maximum indoor spacing grid should be maintained throughout both buildings
as if that wall in question was not there. Mounting heights only for those receivers at or near (within 6 m [20
ft.]) the wall in question should be affected; mounting heights for all other receivers in the buildings must follow
the indoor recommendation. Mark the recommended mounting height for receivers on the higher floor level
and also mark the recommended mounting height for receivers on the lower floor level. Mount the receiver at
its normal grid location midway between these two heights, but not above the ceiling level of the lower floor.
Outdoor Receiver Installation
Outdoor receivers must be mounted in a evenly spaced grid no more than 90 m (300 ft.) apart.
Outdoor receivers must be mounted 3 m (10 ft.) above the ground.
Receivers must not be mounted within 30 cm (1 ft.) of any metal object, including fences, metal walls and walls
with wire mesh. If a receiver is mounted on a metal fence, that fence should be grounded (not floating or
insulated from ground) and the receiver should be spaced 30 cm (1 ft.) from the fence and 3 m (10 ft.) above
the ground.
Take care that large metal objects do not shield a receiver from a protected area. For example; metal fences,
metal staircases, metal buildings, power transformers and metal roofs.
Receiver locations should be below building overhangs and eaves as these can shield the areas below them.
Receivers should have a clear line of sight of the protected area. Therefore, take care where the ground is hilly
or uneven, that there are no areas and low spots where several receivers can't hear the signal.
Security Escort Training
Page 22 of 142
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