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12. Coverage
The coverage of the transmission of the radio signals to the base station can reach up to 100m under
optimal conditions. This is also often designated as "free-field coverage".
This ideal arrangement (e.g. base station and outdoor sensor on a plane, even meadow
without trees, houses etc.), however, is never reality.
Normally, the base station is installed inside the house, the multipurpose sensor in the garden and
further outdoor sensors are positioned in outbuildings (e.g. in a aviary) or in the garage.
The coverage can be considerably limited by:
• walls, reinforced concrete ceilings
• coated/vapour-deposited insulating glass panes
• vehicles
• trees, brushes, earth, rocks
• the proximity to metallic & conductive objects (e.g. heating elements)
• the proximity to the human body
• broad-band interference, e.g. in residence areas (DECT telephones, mobile phones, wireless
loudspeakers, other radio weather stations, baby phones etc.)
• the proximity to electric motors, transformers, power supply units, computers
• the proximity to improperly shielded or uncovered operating computers or other electric appliances
However, a guarantee for a specific coverage is not possible as the local circumstances
are different for different places of installation.
If the base station does not receive data from the multipurpose sensor or from possibly
additional other sensors (despite new batteries), reduce the distance between the
outdoor sensors and the base station, change the place of installation.
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